PRO dustemcgwin_dataset, st, prediction, dataset=dataset, norm=norm, refresh=refresh, nodata=nodata, position=position,positive_only=positive_only, negative_only=negative_only, _extra=_extra

;######DRAFT HELP SECTION######

;dataset = string. IE: 'SED','POLSED','QSED' etc...
;prediction = array. IE: 'dustem_sed', 'dustem_polsed' ... (discrete dustemwrap model predictions)
;norm = boolean. To indicate that it is the normalized plot.
;refresh = boolen. To indicate that the commands are the be replaced. 

;#1-loop on the data set and find its index in !dustem_data/!dustem_show 

;#prediction will be used whith refresh. 

;#you need to know that the data set has been plotted once in order to replace the commands. That is why you need the command index

;first run requires to be known. 
;To do so I will use this system variable '!dustemcgwin_ncmds' that I will only set after the first run
;.sed.pl and .sed.nrm will tell about the number of commands for each kind of plot. 
;this will also interact with the refresh keyword. 

;except for when nodata is used, the 'prediction' array should always be present for errors not to occur.

;YOU NEED THE INFORMATION INSIDE THE _EXTRA STRUCTURE 

;NB: this procedures uses both !dustem_data/!dustem_show to locate hidden filter/spectrum data points

;positions for xyouts on the plots - not using any widgets for now
;using same margins for (placement of xyouts plot titles (ie: I_nu, Q_nu, U_nu etc...)) normalized plots and normal ones.

;######LIST OF THINGS NEEDED#################################################################
;############################################################################################

if !run_pol then pospltxt = [position(0)+0.02,position(3)-0.02] else pospltxt = [position(0)+0.02,position(3)-0.05] ;hard-coded but we can find a way 

wavs=dustem_get_wavelengths()
n_plgns = n_tags(*!dustem_plugin)
Ngrains=(*!dustem_params).Ngrains
use_cols=dustem_grains_colors(Ngrains,/cgplot)
use_cols[1]='Cornflower'
fact = 1.e4*(*!dustem_HCD)/(4.*!pi)/(3.e8/1.e-6/st.sed.wav)*1.e20/1.e7 ; st.sed.wav and st.polsed.wav should remain the same
spec = st.sed.em_tot * fact

degtorad = !pi/180 ;factor that the arctan will be devided by in order to have an axis in degrees. Talk to JP maybe he wants angle in radians.

if !run_pol then begin

    specpol = st.polsed.em_tot * fact
    

;    stop

    ;Instead of matching the non-zero values in spec and specpol (dustem outputs), 
    ;I will only test on specpol as spec does not contain any null values FOR NOW. 
    ;If this happens to change, these lines will have to be adjusted.
    

    ;CHECKING IF THIS IS CORRECT FOR EACH OF THE SPECIES SPECTRA = ? 
    
    

    specpolfrac = specpol *0.
    psi_em = specpol*0.
    indpolsed = where(specpol ne 0, ct_nullpolsed) ;I am not using the counter for now as it serves me no direct purpose.
    specpolfrac[indpolsed] = specpol[indpolsed]/spec[indpolsed]
    
    ;spec[0:11] = 1.00e-40 ; I can't even test for nans because cgwin won't accept the presence of nans in this ratio.
    ;specpolfrac =  specpol/spec
    polar_ippsi2iqu,spec,specq,specu,specpolfrac,replicate(!dustem_psi,n_elements(spec)) ;(Q & U) were generated this way to save time. This sysv fixes my problem but still...
    ;psi_em[indpolsed] = 0.5*atan(specu[indpolsed],specq[indpolsed])/degtorad
    ;specpol = (specq*1.0E10)^2+(specu*1.0E10)^2 & specpol=1.0E-10*sqrt(specpol) ;for some reason cgwindow couldn't handle these mathematical operations. It seems this is caused by values that are too close to zero
    ;stop
endif
;stop 

clrs_plgns = ['Rosy Brown','Gold','Light Coral','Slate Blue','Dark Khaki','Salmon','Dark Green'] ;FOR NOW
scopes=tag_names((*!dustem_scope))

IF scopes[0] NE 'NONE' THEN BEGIN
  FOR i=0L,n_tags(*!dustem_scope)-1 DO BEGIN
    IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_SED') THEN spec+=(*(*!dustem_plugin).(i))[*,0]

        If !run_pol then begin
            IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'REPLACE_POLSED') THEN begin
                
                specq = (*(*!dustem_plugin).(i))[*,1]
                specu = (*(*!dustem_plugin).(i))[*,2]

                
                ;STILL LACKING A WORKAROUND. 

                specpol = (specq*1.0E10)^2+(specu*1.0E10)^2 & specpol=1.0E-10*sqrt(specpol) ;for some reason cgwindow couldn't handle these mathematical operations. It seems this is caused by values that are too close to zero

                
                ;specpol = (specq^2 + specu^2) & specpol = sqrt(specpol)
                

                specpolfrac[indpolsed] = specpol[indpolsed]/spec[indpolsed]
                psi_em[indpolsed] = 0.5*atan(specu[indpolsed],specq[indpolsed])/degtorad
                ;stop
            endif
            IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_POLSED') THEN begin
                
                specq+= (*(*!dustem_plugin).(i))[*,1]
                specu+= (*(*!dustem_plugin).(i))[*,2]
                specpol+= sqrt(((*(*!dustem_plugin).(i))[*,1])^2+(*(*!dustem_plugin).(i))[*,2]^2)
                specpolfrac[indpolsed]+= (sqrt(((*(*!dustem_plugin).(i))[*,1])^2+(*(*!dustem_plugin).(i))[*,2]^2))[indpolsed]/((*(*!dustem_plugin).(i))[*,0])[indpolsed]
                psi_em[indpolsed]+= 0.5*atan(((*(*!dustem_plugin).(i))[*,2])[indpolsed],((*(*!dustem_plugin).(i))[*,1])[indpolsed])/degtorad
                
             endif
        
        ENDIF   

  ENDFOR  

ENDIF

;stop

tgnms_extra = tag_names(_extra)
ind_xr = where(strmid(tgnms_extra,0,2) eq 'XR')
ind_yr = where(strmid(tgnms_extra,0,2) eq 'YR')
if ind_xr EQ -1 then xr=[1.00E+00,1.00E+05] else xr=(_extra.(ind_xr))
if ind_yr EQ -1 then yr=[5.00E-03,1.00E+08] else yr=(_extra.(ind_yr))

;############################################################################################
;############################################################################################



;NB: because of small issue you forgot in the main code. Add xtit=xtit when convenient

if keyword_set(dataset) then begin
;!run_pol is implied for QSED/USED/POLSED etc...
    Case strupcase(dataset) of 
    
        'SED': begin
            
            idx_filt=where((*!dustem_data.sed).filt_names NE 'SPECTRUM',ct_filt)
            idx_spec=where((*!dustem_data.sed).filt_names EQ 'SPECTRUM',ct_spec)
            
            ;#1) get the plotting keywords (pertaining to each data set) @here when the _extra structure is ready
            
            if keyword_set(nodata) then begin ;when the data is not present
            
                if keyword_set(norm) then begin ;normalized plot
                    
                    xtit=textoidl('\lambda (\mum)')
                    if !run_pol then xtit = ''
                    cgplot,wavs,wavs/wavs,/xlog,/ys,xs=1,pos=position,noerase=1,xtickformat='(A1)',color='Black',xr=xr,xtit=xtit,yr=[0.0,2.0],yticks=2,ymino=2,xticklen=0.1,ytickformat='(F6.2)',charsize=1.0
                    xyouts,pospltxt[0],pospltxt[1],textoidl('norm'),color=0,/normal,charsize=1.1                        
                
                endif else begin ;normal plot
                    
                    cgplot,wavs,wavs,/nodata,/ylog,/xlog,/ys,xs=9,pos=position,noerase=1,charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,xtit='',yr=yr,psym=8,syms=0.8  
                    cgaxis, xaxis=1 ,xlog=1 ,xrange=((!const.c*1E6/xr)*1E-9),charsize=1.15,title=textoidl('\nu (GHz)'),xticklen=0.05,xminor=10
                    xyouts,pospltxt[0],pospltxt[1],textoidl('I_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.1
                  
                endelse  
                
            
            endif else begin ;when the data is present 
            
                if keyword_set(norm) then begin 

                    if keyword_set(refresh) then begin ;The data points in the plot that are being refreshed 
                        

                        IF ct_spec NE 0 THEN BEGIN
                            xx=((*!dustem_data.sed).wav)[idx_spec]
                            yy=prediction[idx_spec]
                            rms=3.*((*!dustem_data.sed).sigma)(idx_spec)/2.
                            cgoplot,xx,((*!dustem_data.sed).values)[idx_spec]/yy,color='Powder Blue',psym=16,syms=0.8,noerase=1,pos=position
                            cgerrplot,((*!dustem_data.sed).wav)(idx_spec),(((*!dustem_data.sed).values)[idx_spec]-rms)/yy,(((*!dustem_data.sed).values)[idx_spec]+rms)/yy,color='Powder Blue'

                        ENDIF

                        IF ct_filt NE 0 THEN BEGIN
                            xx=((*!dustem_data.sed).wav)[idx_filt]
                            yy=prediction[idx_filt]
                            rms=3.*((*!dustem_data.sed).sigma)(idx_filt)/2. 
                            cgoplot,xx,((*!dustem_data.sed).values)[idx_filt]/yy,psym=16,color='Dodger Blue',syms=0.8,noerase=1,pos=position

                            cgerrplot,((*!dustem_data.sed).wav)(idx_filt),(((*!dustem_data.sed).values)[idx_filt]-rms)/yy,(((*!dustem_data.sed).values)[idx_filt]+rms)/yy,color='Dodger Blue';,/overplot 

                        ENDIF
                            
                        
                    endif else begin ;The data points in the plot that remain unchanged ; UNNECESSARY BLOCK but needede to limit erros when calls are made with missing keywords.

                        
                        xtit=textoidl('\lambda (\mum)')
                        if !run_pol then xtit = ''
                        cgplot,wavs,wavs/wavs,/xlog,/ys,xs=1,pos=position,noerase=1,xtickformat='(A1)',color='Black',xr=xr,xtit=xtit,yr=[0.0,2.0],yticks=2,ymino=2,xticklen=0.1,ytickformat='(F6.2)',charsize=1.0
                        xyouts,pospltxt[0],pospltxt[1],textoidl('norm'),color=0,/normal,charsize=1.1
                    
                    endelse
                    
                
                endif else begin ; normal plot

                    if keyword_set(refresh) then begin ;The data points in the plot are being refreshed
                        

                        ;Plotting of the spectra of the dust species
                        FOR i=0L,Ngrains-1 DO BEGIN
                            cgoplot,st.sed.wav,st.sed.(i+1)*fact,color=use_cols[i],pos=position,noerase=1
                        ENDFOR
                        

                        ;Plotting of the plugins.
                        for i=0L,n_plgns-1 do begin

                            IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_SED') THEN begin
                                cgoplot,st.sed.wav,((*(*!dustem_plugin).(i))[*,0]),color=clrs_plgns[i],pos=position,noerase=1,linestyle=2               
                            ENDIF

                        endfor

                        ;PLotting of the interpolates corresponding to spectrum and filter points

                        IF ct_spec NE 0 THEN BEGIN
                        
                            xx=((*!dustem_data.sed).wav)[idx_spec]
                            yy=prediction[idx_spec]
                            cgoplot,xx,yy,color='red',pos=position,psym=7,syms=2,noerase=1   
                        ENDIF
                        

                        
                        IF ct_filt NE 0 THEN BEGIN
                            xx=((*!dustem_data.sed).wav)[idx_filt]
                            yy=prediction[idx_filt]
                            cgoplot,xx,yy,color='red',pos=position,psym=6,syms=2,noerase=1
                        ENDIF
                        

                        ;Plotting of the total dust emission spectrum
                        cgoplot,st.sed.wav,spec,pos=position,noerase=1,/xlog,/ys,/xs,/ylog
                         
                                        
                                

                    endif else begin ;The data points in the plot that remain unchanged.
                        
                        ;Spectrum points are treated before for plotting reasons. 
                        if ct_spec ne 0 then begin 
                            
                            ;Plotting of spectrum data points (to be fitted)

                            cgplot,((*!dustem_data.sed).wav)(idx_spec),((*!dustem_data.sed).values)(idx_spec),/ylog,/xlog,/ys,xs=9,pos=position,noerase=1,xtit=' ',charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,yr=yr,psym=8,syms=0.8,ytickformat='dstmwrp_exp'                

                            
                            ;Plotting of the spectrum error points
                            rms=3.*((*!dustem_data.sed).sigma)(idx_spec)/2.
                            cgerrplot,((*!dustem_data.sed).wav)(idx_spec),((*!dustem_data.sed).values)(idx_spec)-rms,((*!dustem_data.sed).values)(idx_spec)+rms,color='Powder Blue'

                        endif
                        
                        if ct_filt ne 0 then begin

                            ;Plotting of filter data points (to be fitted) + testing for prior plotting                         
                            if ct_spec ne 0 then cgoplot,((*!dustem_data.sed).wav)(idx_filt),((*!dustem_data.sed).values)(idx_filt),charsize=1.15,color='Dodger Blue',psym=8,syms=0.8,pos=position,/ys,xs=9,noerase=1,xtickformat='(A1)',xr=xr,yr=yr,ytickformat='dstmwrp_exp',/ylog,/xlog else $

                                cgplot,((*!dustem_data.sed).wav)(idx_filt),((*!dustem_data.sed).values)(idx_filt),charsize=1.15,color='Dodger Blue',psym=8,syms=0.8,pos=position,/ys,xs=9,noerase=1,xtickformat='(A1)',xtit=' ',xr=xr,yr=yr,ytickformat='dstmwrp_exp',/ylog,/xlog
                            

                            
                            ;Plotting of the filter error points
                            rms=3.*((*!dustem_data.sed).sigma)(idx_filt)/2.;/dustem_sed(idx_filt)
                            cgerrplot,((*!dustem_data.sed).wav)(idx_filt),((*!dustem_data.sed).values)(idx_filt)-rms,((*!dustem_data.sed).values)(idx_filt)+rms,color='Dodger Blue'

                        endif

                        ;Plotting of frequency axis

                        cgaxis, xaxis=1, xlog=1, xs=1, xminor=10, xticklen=0.05, xrange=((!const.c*1E6/(_extra.(ind_xr)))*1E-9),charsize=1.15,title=textoidl('\nu (GHz)')
                        

                        xyouts,pospltxt[0],pospltxt[1],textoidl('I_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.1

                        ;Locating all the hidden data points (spectrum+filter)
                        match2,((*!dustem_data.sed).wav),((*!dustem_show.sed).wav),fit_sedpts,show_sedpts ;only show_sedpts is needed
                        idx_rmv_sed=where(show_sedpts eq -1, ct_hdnpts) ; indices of the points to hide

                        ;Locating the hidden spectrum and filter data points                                        
                        idx_filt_hdn = where((((*!dustem_show.sed).filt_names))(idx_rmv_sed) NE 'SPECTRUM',ct_filt_hdn)
                        idx_spec_hdn = where(((*!dustem_show.sed).filt_names)(idx_rmv_sed) EQ 'SPECTRUM',ct_spec_hdn)
                         

                        if ct_hdnpts ne 0 then begin ;Hidden data points are present 

                            ;stop

                            if ct_spec_hdn ne 0 then begin
                                ;Plotting of hidden spectrum data points
                                cgoplot,(((*!dustem_show.sed).wav)[idx_rmv_sed])(idx_spec_hdn),(((*!dustem_show.sed).values)[idx_rmv_sed])(idx_spec_hdn),pos=position,/ylog,/xlog,/ys,xs=9,noerase=1,charsize=1.15,xtickformat='(A1)',color='Black',xr=xr,yr=yr,psym=8,syms=0.8
                                
                                ;Plotting of hidden spectrum error points
                                rms=3.*(((*!dustem_show.sed).sigma)[idx_rmv_sed])(idx_spec_hdn)/2.
                                cgerrplot,(((*!dustem_show.sed).wav)[idx_rmv_sed])(idx_spec_hdn),(((*!dustem_show.sed).values)[idx_rmv_sed])(idx_spec_hdn)-rms,(((*!dustem_show.sed).values)[idx_rmv_sed])(idx_spec_hdn)+rms,color='Black'
                            endif                                            

                            if ct_filt_hdn then begin

                            ;Plotting of hidden filter data points 

                                cgoplot,(((*!dustem_show.sed).wav)[idx_rmv_sed])(idx_filt_hdn),(((*!dustem_show.sed).values)[idx_rmv_sed])(idx_filt_hdn),pos=position,/ylog,/xlog,/ys,xs=9,noerase=1,charsize=1.15,xtickformat='(A1)',color='Black',xr=xr,yr=yr,psym=8,syms=0.8                                           
                                
                                ;Plotting of hidden filter error point
                                rms=3.*(((*!dustem_show.sed).sigma)[idx_rmv_sed])(idx_filt_hdn)/2.
                                cgerrplot,(((*!dustem_show.sed).wav)[idx_rmv_sed])(idx_filt_hdn),(((*!dustem_show.sed).values)[idx_rmv_sed])(idx_filt_hdn)-rms,(((*!dustem_show.sed).values)[idx_rmv_sed])(idx_filt_hdn)+rms,color='Black'
                                
                            endif

                                                           
                        endif    
                        
                        
                    
                    endelse 
                
                
                
                endelse 
            

            endelse 

        ;stop    

        end
        
        'EXT': begin
        
        end
        
        'POLEXT': begin
        
        end
        

        'POLSED': begin ;#NB: There seems to be an issue with the display of the dust species. 'Carbonaceous grains' 's emission exceeds the total emission.
                        ;MABE AN ISSUE WITH HOW 'SPECPOL' refreshes?
                        ;PROCEEDING TO POLFRAC  

            idx_filt=where((*!dustem_data.polsed).filt_names NE 'SPECTRUM',ct_filt)
            idx_spec=where((*!dustem_data.polsed).filt_names EQ 'SPECTRUM',ct_spec)
            
            ;#1) get the plotting keywords (pertaining to each data set) @here when the _extra structure is ready
            
            if keyword_set(nodata) then begin ;when the data is not present
            
                if keyword_set(norm) then begin ;normalized plot
                    
                    xtit=textoidl('\lambda (\mum)')
                    if !run_pol then xtit = ''
                    cgplot,wavs,wavs/wavs,/xlog,/ys,xs=1,pos=position,noerase=1,xtickformat='(A1)',color='Black',xr=xr,xtit=xtit,yr=[0.0,2.0],yticks=2,ymino=2,xticklen=0.1,ytickformat='(F6.2)',charsize=1.0
                    xyouts,pospltxt[0],pospltxt[1],textoidl('norm'),color=0,/normal,charsize=1.1                        
                
                endif else begin ;normal plot
                    
                    cgplot,wavs,wavs,/nodata,/ylog,/xlog,/ys,xs=9,pos=position,noerase=1,charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,xtit='',yr=yr,psym=8,syms=0.8  
                    cgaxis, xaxis=1 ,xlog=1 ,xrange=((!const.c*1E6/xr)*1E-9),charsize=1.15,title=textoidl('\nu (GHz)'),xticklen=0.05,xminor=10
                    xyouts,pospltxt[0],pospltxt[1],textoidl('P_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.1
                  
                endelse  
                
            
            endif else begin ;when the data is present 
            
                if keyword_set(norm) then begin 
                    
                    if keyword_set(refresh) then begin ;The data points in the plot that are being refreshed 
                        
                        IF ct_spec NE 0 THEN BEGIN
                            xx=((*!dustem_data.polsed).wav)[idx_spec]
                            yy=prediction[idx_spec]
                            rms=3.*((*!dustem_data.polsed).sigma)(idx_spec)/2.
                            cgoplot,xx,((*!dustem_data.polsed).values)[idx_spec]/yy,color='Powder Blue',psym=16,syms=0.8,noerase=1,pos=position
                            cgerrplot,((*!dustem_data.polsed).wav)(idx_spec),(((*!dustem_data.polsed).values)[idx_spec]-rms)/yy,(((*!dustem_data.polsed).values)[idx_spec]+rms)/yy,color='Powder Blue'
                        ENDIF
                        
                        IF ct_filt NE 0 THEN BEGIN
                            xx=((*!dustem_data.polsed).wav)[idx_filt]
                            yy=prediction[idx_filt]
                            rms=3.*((*!dustem_data.polsed).sigma)(idx_filt)/2. 
                            cgoplot,xx,((*!dustem_data.polsed).values)[idx_filt]/yy,psym=16,color='Dodger Blue',syms=0.8,noerase=1,pos=position
                            cgerrplot,((*!dustem_data.polsed).wav)(idx_filt),(((*!dustem_data.polsed).values)[idx_filt]-rms)/yy,(((*!dustem_data.polsed).values)[idx_filt]+rms)/yy,color='Dodger Blue';,/overplot 
                        ENDIF
                            
                        
                    endif else begin ;The data points in the plot that remain unchanged ; UNNECESSARY BLOCK but needede to limit erros when calls are made with missing keywords.
                        
                        xtit=textoidl('\lambda (\mum)')
                        if !run_pol then xtit = ''
                        cgplot,wavs,wavs/wavs,/xlog,/ys,xs=1,pos=position,noerase=1,xtickformat='(A1)',color='Black',xr=xr,xtit=xtit,yr=[0.0,2.0],yticks=2,ymino=2,xticklen=0.1,ytickformat='(F6.2)',charsize=1.0
                        xyouts,pospltxt[0],pospltxt[1],textoidl('norm'),color=0,/normal,charsize=1.1
                    
                    endelse
                    
                
                endif else begin ; normal plot
                        
                    if keyword_set(refresh) then begin ;The data points in the plot are being refreshed
                        
                        ;Plotting of the spectra of the dust species
                        FOR i=0L,Ngrains-1 DO BEGIN
                            cgoplot,st.polsed.wav,st.polsed.(i+1)*fact,color=use_cols[i],pos=position,noerase=1
                        ENDFOR
                        
                        ;stop
                                                
                        ;Plotting of the plugins.
                        for i=0L,n_plgns-1 do begin
                            IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_polsed') THEN begin
                                cgoplot,st.polsed.wav,sqrt(((*(*!dustem_plugin).(i))[*,1])^2+((*(*!dustem_plugin).(i))[*,2])^2),color=clrs_plgns[i],pos=position,noerase=1,linestyle=2               
                            ENDIF
                        endfor
                                                
                        ;PLotting of the interpolates corresponding to spectrum and filter points
                           
                        IF ct_spec NE 0 THEN BEGIN
                        
                            xx=((*!dustem_data.polsed).wav)[idx_spec]
                            yy=prediction[idx_spec]
                            cgoplot,xx,yy,color='red',pos=position,psym=7,syms=2,noerase=1   
                        ENDIF
                        
                        
                        IF ct_filt NE 0 THEN BEGIN
                            xx=((*!dustem_data.polsed).wav)[idx_filt]
                            yy=prediction[idx_filt]
                            cgoplot,xx,yy,color='red',pos=position,psym=6,syms=2,noerase=1
                        ENDIF
                        
                        ;Plotting of the total dust emission spectru
                        cgoplot,st.polsed.wav,specpol,pos=position,noerase=1,/xlog,/ys,/xs,/ylog
                         
                                        
                                
                    endif else begin ;The data points in the plot that remain unchanged.
                        
                        ;Spectrum points are treated before for plotting reasons. 
                        if ct_spec ne 0 then begin 
                            
                            ;Plotting of spectrum data points (to be fitted)
                            cgplot,((*!dustem_data.polsed).wav)(idx_spec),((*!dustem_data.polsed).values)(idx_spec),/ylog,/xlog,/ys,xs=9,pos=position,noerase=1,xtit=' ',charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,yr=yr,psym=8,syms=0.8,ytickformat='dstmwrp_exp'                
                            
                            ;Plotting of the spectrum error points
                            rms=3.*((*!dustem_data.polsed).sigma)(idx_spec)/2.
                            cgerrplot,((*!dustem_data.polsed).wav)(idx_spec),((*!dustem_data.polsed).values)(idx_spec)-rms,((*!dustem_data.polsed).values)(idx_spec)+rms,color='Powder Blue'

                        endif
                        
                        if ct_filt ne 0 then begin
                            plotsym,0,/fill
                            ;Plotting of filter data points (to be fitted) + testing for prior plotting                         
                            if ct_spec ne 0 then cgoplot,((*!dustem_data.polsed).wav)(idx_filt),((*!dustem_data.polsed).values)(idx_filt),charsize=1.15,color='Dodger Blue',psym=8,syms=0.8,pos=position,/ys,xs=9,noerase=1,xtickformat='(A1)',xr=xr,yr=yr,ytickformat='dstmwrp_exp',/ylog,/xlog else $
                                cgplot,((*!dustem_data.polsed).wav)(idx_filt),((*!dustem_data.polsed).values)(idx_filt),charsize=1.15,color='Dodger Blue',psym=8,syms=0.8,pos=position,/ys,xs=9,noerase=1,xtickformat='(A1)',xtit=' ',xr=xr,yr=yr,ytickformat='dstmwrp_exp',/ylog,/xlog
                            
                            
                            ;Plotting of the filter error points
                            rms=3.*((*!dustem_data.polsed).sigma)(idx_filt)/2.;/dustem_polsed(idx_filt)
                            cgerrplot,((*!dustem_data.polsed).wav)(idx_filt),((*!dustem_data.polsed).values)(idx_filt)-rms,((*!dustem_data.polsed).values)(idx_filt)+rms,color='Dodger Blue'
                            
                        endif
                        
                        
                        ;Plotting of frequency axis
                        cgaxis, xaxis=1, xlog=1, xs=1, xminor=10, xticklen=0.05, xrange=((!const.c*1E6/(_extra.(ind_xr)))*1E-9),charsize=1.15,title=textoidl('\nu (GHz)')
                        
                        xyouts,pospltxt[0],pospltxt[1],textoidl('P_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.1
                         
                        ;Locating all the hidden data points (spectrum+filter)
                        match2,((*!dustem_data.polsed).wav),((*!dustem_show.polsed).wav),fit_polsedpts,show_polsedpts ;only show_polsedpts is needed
                        idx_rmv_polsed=where(show_polsedpts eq -1, ct_hdnpts) ; indices of the points to hide

                        ;Locating the hidden spectrum and filter data points                                        
                        idx_filt_hdn = where((((*!dustem_show.polsed).filt_names))(idx_rmv_polsed) NE 'SPECTRUM',ct_filt_hdn)
                        idx_spec_hdn = where(((*!dustem_show.polsed).filt_names)(idx_rmv_polsed) EQ 'SPECTRUM',ct_spec_hdn)
                        

                        ;stop

                        if ct_hdnpts ne 0 then begin ;Hidden data points are present 
                            ;stop

                            
                            if ct_spec_hdn ne 0 then begin
                                ;Plotting of hidden spectrum data points
                                cgplot,(((*!dustem_show.polsed).wav)[idx_rmv_polsed])(idx_spec_hdn),(((*!dustem_show.polsed).values)[idx_rmv_polsed])(idx_spec_hdn),pos=position,/ylog,/xlog,/ys,xs=9,noerase=1,charsize=1.15,xtickformat='(A1)',color='Black',xr=xr,yr=yr,psym=8,syms=0.8
                                
                                ;Plotting of hidden spectrum error points
                                rms=3.*(((*!dustem_show.polsed).sigma)[idx_rmv_polsed])(idx_spec_hdn)/2.
                                cgerrplot,(((*!dustem_show.polsed).wav)[idx_rmv_polsed])(idx_spec_hdn),(((*!dustem_show.polsed).values)[idx_rmv_polsed])(idx_spec_hdn)-rms,(((*!dustem_show.polsed).values)[idx_rmv_polsed])(idx_spec_hdn)+rms,color='Black'
                            endif                                            
                            

                            if ct_filt_hdn ne 0 then begin

                            ;Plotting of hidden filter data points 
                                cgplot,(((*!dustem_show.polsed).wav)[idx_rmv_polsed])(idx_filt_hdn),(((*!dustem_show.polsed).values)[idx_rmv_polsed])(idx_filt_hdn),pos=position,/ylog,/xlog,/ys,xs=9,noerase=1,charsize=1.15,xtickformat='(A1)',color='Black',xr=xr,yr=yr,psym=8,syms=0.8                                           
                                
                                ;Plotting of hidden filter error point
                                rms=3.*(((*!dustem_show.polsed).sigma)[idx_rmv_polsed])(idx_filt_hdn)/2.
                                cgerrplot,(((*!dustem_show.polsed).wav)[idx_rmv_polsed])(idx_filt_hdn),(((*!dustem_show.polsed).values)[idx_rmv_polsed])(idx_filt_hdn)-rms,(((*!dustem_show.polsed).values)[idx_rmv_polsed])(idx_filt_hdn)+rms,color='Black'
                                
                            endif
                                                           
                        endif    
                        
                        
                    
                    endelse 
                
                
                
                endelse 
            
            endelse
        

        end
        

        'POLFRAC': begin ; YOU NEED TO CODE THIS PART - TOU STILL HAVE'NT FINISHED. 
            idx_filt=where((*!dustem_data.polfrac).filt_names NE 'SPECTRUM',ct_filt)
            idx_spec=where((*!dustem_data.polfrac).filt_names EQ 'SPECTRUM',ct_spec)
            
            ;#1) get the plotting keywords (pertaining to each data set) @here when the _extra structure is ready
            
            if keyword_set(nodata) then begin ;when the data is not present
            
                    xtit = ''
                    cgplot,wavs,wavs*0.,/nodata,/xlog,/ys,xs=1,pos=position,noerase=1,charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,xtit='',yr=[1.00E-03,50.00],/ylog,psym=8,syms=0.8  
                    xyouts,pospltxt[0],pospltxt[1],textoidl('p_{\nu} (%)'),color=0,/normal,charsize=1.1
                 
            endif else begin ;when the data is present ; normal plot     
                        
                    if keyword_set(refresh) then begin ;The data points in the plot are being refreshed
                        
                        ;##################TAKEN FROM SED
                        
                        ;Plotting of the spectra of the dust species
                        
                        ;I THINK I WILL HAVE AN ERROR HERE BECAUSE I WILL HAVE TO DIVIDE TWO ARRAYS FOR EACH DUST SPECIES. 
                        ; (st.polsed.(i+1)/st.sed.(i+1))*fact
                        ;There is an issue with the fact that there are grain species that are not polarized
                        ;test and set a counter? YES FOR NOW 
                        ;
                        
                        FOR i=0L,Ngrains-1 DO BEGIN
                            
                            testneq = where(st.polsed.(i+1) ne 0, countneq)
                            
                            vecfin = st.polsed.(i+1)*0.0
                            ;SET the condition later
                            if countneq ne 0 then vecfin[testneq] = (st.polsed.(i+1))[testneq]/(st.sed.(i+1))[testneq]
                             
                            cgoplot,st.polsed.wav,vecfin*100,pos=position,noerase=1,color=use_cols[i],xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=[1.00E-03,50.00]
                       
                        ENDFOR
                       
                        ;Plotting of the plugins. 
                        
                        ;NB: YOU HAVE YET TO TEST THIS BLOCK. DON'T FORGET TO ADD A POLARIZATION FRACTION TO FF for instance. 
                        ; The thing is you've already had errors of that kind. 
                        
                        ;PLUGINS SEEM TO HAVE ZERO NULL VALUES. THIS IS GOOD NEWS. LESS TESTING.
                        ;BUT if you get errors you know it has to be the division of the two arrays.
                        ;THE CHANGES SEEM LIKE THEY'RE GONNA WORK.
                        
                        
                        ;MISSING KEYWORDS? 
                        for i=0L,n_plgns-1 do begin
                            IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_POLSED') THEN begin
                                
                                cgoplot,st.polsed.wav,sqrt(((*(*!dustem_plugin).(i))[*,1])^2+((*(*!dustem_plugin).(i))[*,2])^2)/((*(*!dustem_plugin).(i))[*,0])*100,color=clrs_plgns[i],pos=position,noerase=1,linestyle=2               
                            
                            ENDIF
                        endfor
                       
                        
                         ;PLotting of the interpolates corresponding to spectrum and filter points
                        
                         IF ct_spec NE 0 THEN BEGIN
                         
                             xx=((*!dustem_data.polfrac).wav)[idx_spec]
                             yy=prediction[idx_spec]
                             cgoplot,xx,yy*100,color='red',pos=position,psym=7,syms=2,noerase=1   
                         ENDIF
                         
                         
                         IF ct_filt NE 0 THEN BEGIN
                             xx=((*!dustem_data.polfrac).wav)[idx_filt]
                             yy=prediction[idx_filt]
                             cgoplot,xx,yy*100,color='red',pos=position,psym=6,syms=2,noerase=1
                         ENDIF
                         
                         
                         ;Plotting of the total dust emission spectrum
                         cgoplot,st.polsed.wav,specpolfrac*100,pos=position,noerase=1,/xlog,/ys,/xs
                                        
                                
                    endif else begin ;The data points in the plot that remain unchanged.
                        
                        
                        ;Plotting of frequency axis
                        ;cgaxis, xaxis=1, xlog=1, xs=1, xminor=10, xticklen=0.05, xrange=((!const.c*1E6/(_extra.(ind_xr)))*1E-9),charsize=1.15,title=textoidl('\nu (GHz)')
                        
                        
                        ;Spectrum points are treated before for plotting reasons. 

                        if ct_spec ne 0 then begin 
                            
                            ;Plotting of spectrum data points (to be fitted)
                            cgplot,((*!dustem_data.polfrac).wav)(idx_spec),((*!dustem_data.polfrac).values)(idx_spec)*100,/xlog,/ylog,/ys,xs=1,pos=position,noerase=1,xtit=' ',charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,yr=[1.00E-03,50.00],psym=16,syms=0.8;,ytickformat='dstmwrp_exp'                
                            
                            ;Plotting of the spectrum error points
                            rms=3.*((*!dustem_data.polfrac).sigma)(idx_spec)/2.
                            cgerrplot,((*!dustem_data.polfrac).wav)(idx_spec),(((*!dustem_data.polfrac).values)(idx_spec)-rms)*100,(((*!dustem_data.polfrac).values)(idx_spec)+rms)*100,color='Powder Blue'

                        endif
                        
                        if ct_filt ne 0 then begin
                        
                            ;Plotting of filter data points (to be fitted) + testing for prior plotting                         
                            if ct_spec ne 0 then cgoplot,((*!dustem_data.polfrac).wav)(idx_filt),((*!dustem_data.polfrac).values)(idx_filt)*100,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,pos=position,/ys,xs=1,noerase=1,xtickformat='(A1)',xr=xr,yr=[1.00E-03,50.00],/xlog,/ylog else $;,ytickformat='dstmwrp_exp'
                                cgplot,((*!dustem_data.polfrac).wav)(idx_filt),((*!dustem_data.polfrac).values)(idx_filt)*100,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,pos=position,/ys,xs=1,noerase=1,xtickformat='(A1)',xtit=' ',xr=xr,yr=[1.00E-03,50.00],/xlog,/ylog;,ytickformat='dstmwrp_exp'
                            
                            
                            ;Plotting of the filter error points
                            rms=3.*((*!dustem_data.polfrac).sigma)(idx_filt)/2.;/dustem_polfrac(idx_filt)
                            cgerrplot,((*!dustem_data.polfrac).wav)(idx_filt),(((*!dustem_data.polfrac).values)(idx_filt)-rms)*100,(((*!dustem_data.polfrac).values)(idx_filt)+rms)*100,color='Dodger Blue'
                            
                        endif
                        
                        
                        
                        xyouts,pospltxt[0],pospltxt[1],textoidl('p_{\nu} (%)'),color=0,/normal,charsize=1.1
                         
                        ;Locating all the hidden data points (spectrum+filter)
                        
                        ;The filtering has been done prior (in the primary routine)
                        match2,((*!dustem_data.polfrac).wav),((*!dustem_show.polfrac).wav),fit_polfracpts,show_polfracpts ;only show_polfracpts is needed
                        idx_rmv_polfrac=where(show_polfracpts eq -1, ct_hdnpts) ; indices of the points to hide
                        ;stop

                        ;Locating the hidden spectrum and filter data points                                        
                        idx_filt_hdn = where(((*!dustem_show.polfrac).filt_names)(idx_rmv_polfrac) NE 'SPECTRUM',ct_filt_hdn)
                        idx_spec_hdn = where(((*!dustem_show.polfrac).filt_names)(idx_rmv_polfrac) EQ 'SPECTRUM',ct_spec_hdn)

                        if ct_hdnpts ne 0 then begin ;Hidden data points are present 
                            ;stop

                            
                            if ct_spec_hdn ne 0 then begin
                                ;Plotting of hidden spectrum data points
                                cgplot,(((*!dustem_show.polfrac).wav)[idx_rmv_polfrac])(idx_spec_hdn),(((*!dustem_show.polfrac).values)[idx_rmv_polfrac])(idx_spec_hdn)*100,pos=position,/xlog,/ylog,/ys,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',color='Black',xr=xr,yr=[1.00E-03,50.00],psym=8,syms=0.8
                                
                                ;Plotting of hidden spectrum error points
                                rms=3.*(((*!dustem_show.polfrac).sigma)[idx_rmv_polfrac])(idx_spec_hdn)/2.
                                cgerrplot,(((*!dustem_show.polfrac).wav)[idx_rmv_polfrac])(idx_spec_hdn),((((*!dustem_show.polfrac).values)[idx_rmv_polfrac])(idx_spec_hdn)-rms)*100,((((*!dustem_show.polfrac).values)[idx_rmv_polfrac])(idx_spec_hdn)+rms)*100,color='Black'
                            endif                                           
                            
                            if ct_filt_hdn ne 0 then begin
                                ;stop
                                plotsym,0, /fill
                                ;Plotting of hidden filter data points 
                                cgplot,(((*!dustem_show.polfrac).wav)[idx_rmv_polfrac])(idx_filt_hdn),(((*!dustem_show.polfrac).values)[idx_rmv_polfrac])(idx_filt_hdn)*100,pos=position,/xlog,/ylog,/ys,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',color='Black',xr=xr,yr=[1.00E-03,50.00],psym=8,syms=0.8                                           
                                ;stop
                                ;Plotting of hidden filter error point
                                rms=3.*(((*!dustem_show.polfrac).sigma)[idx_rmv_polfrac])(idx_filt_hdn)/2.
                                cgerrplot,(((*!dustem_show.polfrac).wav)[idx_rmv_polfrac])(idx_filt_hdn),((((*!dustem_show.polfrac).values)[idx_rmv_polfrac])(idx_filt_hdn)-rms)*100,((((*!dustem_show.polfrac).values)[idx_rmv_polfrac])(idx_filt_hdn)+rms)*100,color='Black'
                                 
                            endif 
                                                           
                        endif 
                        
                    
                    endelse 
                
            endelse 

        
        end
        

        'PSI_EM': begin ;will be copying code from qsed and hopefully it will work. NB: THIS IS FALSE . YOU DO NOT NEED A LOGARITHMIC AXIS
            
            idx_filt=where((*!dustem_data.psi_em).filt_names NE 'SPECTRUM',ct_filt)
            idx_spec=where((*!dustem_data.psi_em).filt_names EQ 'SPECTRUM',ct_spec)
            
            ;#1) get the plotting keywords (pertaining to each data set) @here when the _extra structure is ready
            
            if keyword_set(nodata) then begin ;when the data is not present
            
                    xtit = ''
                    cgplot,wavs,wavs*0.,/nodata,/xlog,/ys,xs=1,pos=position,noerase=1,charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,xtit='',yr=[-90.00,90.00],psym=8,syms=0.8  
                    xyouts,pospltxt[0],pospltxt[1],textoidl('\Psi_{\nu} (deg)'),color=0,/normal,charsize=1.1
                 
            endif else begin ;when the data is present ; normal plot     
                        
                    if keyword_set(refresh) then begin ;The data points in the plot are being refreshed
                        
                        ;##################TAKEN FROM SED
                        
                        ;Plotting of the spectra of the dust species
                        FOR i=0L,Ngrains-1 DO BEGIN
                            polar_ippsi2iqu,st.sed.(i+1)*fact,specqgrain,specugrain,st.polsed.(i+1)*fact/spec,replicate(!dustem_psi,n_elements(spec)) ;temporary solution
                            ;dustem_plot_mlog,st.polsed.wav,specqgrain,ppositions=position,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog 
                            cgoplot,st.polsed.wav,0.5*atan(specugrain,specqgrain)/degtorad,pos=position,noerase=1,color=use_cols[i],xr=xr,/xlog,ytickformat='(A1)',yr=[-90.00,90.00]
                        ENDFOR
                                                                        
                        ;Plotting of the plugins.
                        for i=0L,n_plgns-1 do begin
                            IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_POLSED') THEN begin
                                ;dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,1],ppositions=position, /overplot, noerase=1, color=clrs_plgns[i], linestyle=2,xr=xr,/xlog
                                cgoplot_mlog,st.polsed.wav,0.5*atan((*(*!dustem_plugin).(i))[*,2],(*(*!dustem_plugin).(i))[*,1])/degtorad,pos=position,noerase=1, color=clrs_plgns[i], linestyle=2 ,xr=xr,/xlog,ytickformat='(A1)',yr=[-90.00,90.00]   
                            ENDIF
                        endfor
                        
                         ;PLotting of the interpolates corresponding to spectrum and filter points
                        
                         IF ct_spec NE 0 THEN BEGIN
                         
                             xx=((*!dustem_data.psi_em).wav)[idx_spec]
                             yy=prediction[idx_spec]
                             cgoplot,xx,yy,color='red',pos=position,psym=7,syms=2,noerase=1   
                         ENDIF
                         
                         
                         IF ct_filt NE 0 THEN BEGIN
                             xx=((*!dustem_data.psi_em).wav)[idx_filt]
                             yy=prediction[idx_filt]
                             cgoplot,xx,yy,color='red',pos=position,psym=6,syms=2,noerase=1
                         ENDIF
                         
                         
                         ;Plotting of the total dust emission spectrum
                         cgoplot,st.sed.wav,0.5*atan(specu,specq)/degtorad,pos=position,noerase=1,/xlog,/ys,/xs
                                        
                                
                    endif else begin ;The data points in the plot that remain unchanged.
                        
                        
                        ;Plotting of frequency axis
                        ;cgaxis, xaxis=1, xlog=1, xs=1, xminor=10, xticklen=0.05, xrange=((!const.c*1E6/(_extra.(ind_xr)))*1E-9),charsize=1.15,title=textoidl('\nu (GHz)')
                        
                        
                        ;Spectrum points are treated before for plotting reasons. 
                        if ct_spec ne 0 then begin 
                            
                            ;Plotting of spectrum data points (to be fitted)
                            cgplot,((*!dustem_data.psi_em).wav)(idx_spec),((*!dustem_data.psi_em).values)(idx_spec),/xlog,/ys,xs=1,pos=position,noerase=1,xtit=' ',charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,yr=[-90.00,90.00],psym=16,syms=0.8;,ytickformat='dstmwrp_exp'                
                            
                            ;Plotting of the spectrum error points
                            rms=3.*((*!dustem_data.psi_em).sigma)(idx_spec)/2.
                            cgerrplot,((*!dustem_data.psi_em).wav)(idx_spec),((*!dustem_data.psi_em).values)(idx_spec)-rms,((*!dustem_data.psi_em).values)(idx_spec)+rms,color='Powder Blue'

                        endif
                        
                        if ct_filt ne 0 then begin
                        
                            ;Plotting of filter data points (to be fitted) + testing for prior plotting                         
                            if ct_spec ne 0 then cgoplot,((*!dustem_data.psi_em).wav)(idx_filt),((*!dustem_data.psi_em).values)(idx_filt),charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,pos=position,/ys,xs=1,noerase=1,xtickformat='(A1)',xr=xr,yr=[-90.00,90.00],/xlog else $;,ytickformat='dstmwrp_exp'
                                cgplot,((*!dustem_data.psi_em).wav)(idx_filt),((*!dustem_data.psi_em).values)(idx_filt),charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,pos=position,/ys,xs=1,noerase=1,xtickformat='(A1)',xtit=' ',xr=xr,yr=[-90.00,90.00],/xlog;,ytickformat='dstmwrp_exp'
                            
                            
                            ;Plotting of the filter error points
                            rms=3.*((*!dustem_data.psi_em).sigma)(idx_filt)/2.;/dustem_psi_em(idx_filt)
                            cgerrplot,((*!dustem_data.psi_em).wav)(idx_filt),((*!dustem_data.psi_em).values)(idx_filt)-rms,((*!dustem_data.psi_em).values)(idx_filt)+rms,color='Dodger Blue'
                            
                        endif
                        
                        
                        
                        xyouts,pospltxt[0],pospltxt[1],textoidl('\Psi_{\nu} (deg)'),color=0,/normal,charsize=1.1
                         
                        ;Locating all the hidden data points (spectrum+filter)
                        
                        ;The filtering has been done prior (in the primary routine)
                        match2,((*!dustem_data.psi_em).wav),((*!dustem_show.psi_em).wav),fit_psi_empts,show_psi_empts ;only show_psi_empts is needed
                        idx_rmv_psi_em=where(show_psi_empts eq -1, ct_hdnpts) ; indices of the points to hide
                        ;stop

                        ;Locating the hidden spectrum and filter data points                                        
                        idx_filt_hdn = where(((*!dustem_show.psi_em).filt_names)(idx_rmv_psi_em) NE 'SPECTRUM',ct_filt_hdn)
                        idx_spec_hdn = where(((*!dustem_show.psi_em).filt_names)(idx_rmv_psi_em) EQ 'SPECTRUM',ct_spec_hdn)

                        if ct_hdnpts ne 0 then begin ;Hidden data points are present 
                            ;stop

                            
                            if ct_spec_hdn ne 0 then begin
                                ;Plotting of hidden spectrum data points
                                cgplot,(((*!dustem_show.psi_em).wav)[idx_rmv_psi_em])(idx_spec_hdn),(((*!dustem_show.psi_em).values)[idx_rmv_psi_em])(idx_spec_hdn),pos=position,/xlog,/ys,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',color='Black',xr=xr,yr=[-90.00,90.00],psym=8,syms=0.8
                                
                                ;Plotting of hidden spectrum error points
                                rms=3.*(((*!dustem_show.psi_em).sigma)[idx_rmv_psi_em])(idx_spec_hdn)/2.
                                cgerrplot,(((*!dustem_show.psi_em).wav)[idx_rmv_psi_em])(idx_spec_hdn),(((*!dustem_show.psi_em).values)[idx_rmv_psi_em])(idx_spec_hdn)-rms,(((*!dustem_show.psi_em).values)[idx_rmv_psi_em])(idx_spec_hdn)+rms,color='Black'
                            endif                                           
                            
                            if ct_filt_hdn ne 0 then begin
                                ;stop
                                plotsym,0, /fill
                                ;Plotting of hidden filter data points 
                                cgplot,(((*!dustem_show.psi_em).wav)[idx_rmv_psi_em])(idx_filt_hdn),(((*!dustem_show.psi_em).values)[idx_rmv_psi_em])(idx_filt_hdn),pos=position,/xlog,/ys,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',color='Black',xr=xr,yr=[-90.00,90.00],psym=8,syms=0.8                                           
                                ;stop
                                ;Plotting of hidden filter error point
                                rms=3.*(((*!dustem_show.psi_em).sigma)[idx_rmv_psi_em])(idx_filt_hdn)/2.
                                cgerrplot,(((*!dustem_show.psi_em).wav)[idx_rmv_psi_em])(idx_filt_hdn),(((*!dustem_show.psi_em).values)[idx_rmv_psi_em])(idx_filt_hdn)-rms,(((*!dustem_show.psi_em).values)[idx_rmv_psi_em])(idx_filt_hdn)+rms,color='Black'
                                 
                            endif 
                                                           
                        endif 
                        
                        
                           
                        ;stop
                        
                        
                        
                        
                        
                        
                    
                    endelse 
                
                
                
                ;endelse 
            
            endelse 
        ;stop
           
           

        end
        

        'PSI_EXT': begin 

        
        end
        

        'QSED': begin ; THE ONE I WILL BE WORKING ON

            
            ;SIGN-RELATED PARAMETERS/LOOPS HERE?
            ;negative & positive values regardless of data type (SPECTRUM or FILTER data points)

            ;WHAT HAPPENS TO NULL VALUES ? 
            
            varvar=where((*!dustem_data.qsed).values GT 0, testpstv)
            varvar=where((*!dustem_data.qsed).values LT 0, testngtv)
            

            ;stop

            idx_filt=where((*!dustem_data.qsed).filt_names NE 'SPECTRUM', ct_filt)
            idx_spec=where((*!dustem_data.qsed).filt_names EQ 'SPECTRUM' , ct_spec)

            ;Plotting of frequency axis
            ;cgaxis, xaxis=1, xlog=1, xs=1, xminor=10;, xticklen=0.05, xrange=((!const.c*1E6/(_extra.(ind_xr)))*1E-9),charsize=1.15,title=textoidl('\nu (GHz)') 
            
            ;stop
            ;Locating all the hidden data points (spectrum+filter)
            match2,((*!dustem_data.qsed).wav),((*!dustem_show.qsed).wav),fit_sedpts,show_sedpts ;only show_sedpts is needed
            idx_rmv_sed=where(show_sedpts eq -1, ct_hdnpts) ; indices of the points to hide

            stop

            
            ;#1) get the plotting keywords (pertaining to each data set) @here when the _extra structure is ready
            
            if keyword_set(nodata) then begin ;when the data is not present
            
                if keyword_set(norm) then begin ;normalized plot
                    
                    xtit=textoidl('\lambda (\mum)')
                    if !run_pol then xtit = ''
                    cgplot,wavs,wavs/wavs,/xlog,/ys,xs=1,pos=position,noerase=1,xtickformat='(A1)',color='Black',xr=xr,xtit=xtit,yr=[0.0,2.0],yticks=2,ymino=2,xticklen=0.1,ytickformat='(F6.2)',charsize=1.0
                    xyouts,pospltxt[0],pospltxt[1],textoidl('norm'),color=0,/normal,charsize=1.1                        
                
                endif else begin ;normal plot
                    

                    cgplot,wavs,wavs,/nodata,/ylog,/xlog,/ys,xs=1,pos=position,noerase=1,charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,xtit='',yr=yr,psym=8,syms=0.8  
                    ;cgaxis, xaxis=1 ,xlog=1 ,xrange=((!const.c*1E6/xr)*1E-9),charsize=1.15,title=textoidl('\nu (GHz)'),xticklen=0.05,xminor=10

                    xyouts,pospltxt[0],pospltxt[1],textoidl('Q_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.1
                  
                endelse  
                
            
            endif else begin ;when the data is present 

                if keyword_set(norm) then begin 

                    if keyword_set(refresh) then begin ;The data points in the plot that are being refreshed 
                        

                        ;MAJOR LOOP OVER THE SING??? - YES BECAUSE YOU NEED TO KNOW WHICH ONE IS THE 
                

                        IF ct_spec NE 0 THEN BEGIN
                            xx=((*!dustem_data.qsed).wav)[idx_spec]
                            yy=prediction[idx_spec]
                            rms=3.*((*!dustem_data.qsed).sigma)(idx_spec)/2.
;                             if testsgq ne 0 then dustem_plot_mlog,xx,((*!dustem_data.qsed).values)(idx_spec),ppositions=position,psym=16,color='Powder Blue',syms=0.8,noerase=1,/negative_only,/overplot else $
;                                 dustem_plot_mlog,xx,((*!dustem_data.qsed).values)(idx_spec),ppositions=position,((*!dustem_data.qsed).values)[idx_spec]/yy,psym=16,color='Powder Blue',syms=0.8,noerase=1,/positive_only,/overplot
                            cgoplot,xx,((*!dustem_data.qsed).values)(idx_spec)/yy,pos=position,psym=16,color='Powder Blue',syms=0.8,noerase=1 
                            cgerrplot,((*!dustem_data.qsed).wav)(idx_spec),(((*!dustem_data.qsed).values)[idx_spec]-rms)/yy,(((*!dustem_data.qsed).values)[idx_spec]+rms)/yy,color='Powder Blue'
                        
                        ENDIF
                        

                        IF ct_filt NE 0 THEN BEGIN

                            ;stop

                            xx=((*!dustem_data.qsed).wav)[idx_filt]
                            yy=prediction[idx_filt]
                            rms=3.*((*!dustem_data.qsed).sigma)(idx_filt)/2. 

;                             if testsgq ne 0 then dustem_plot_mlog,xx,((*!dustem_data.qsed).values)(idx_filt),ppositions=position,psym=16,color='Dodger Blue',syms=0.8,noerase=1,/negative_only,/overplot else $
;                                 dustem_plot_mlog,xx,((*!dustem_data.qsed).values)(idx_filt),ppositions=position,psym=16,color='Dodger Blue',syms=0.8,noerase=1,/positive_only,/overplot
                            cgoplot,xx,((*!dustem_data.qsed).values)(idx_filt)/yy,pos=position,psym=16,color='Dodger Blue',syms=0.8,noerase=1 

                            cgerrplot,((*!dustem_data.qsed).wav)(idx_filt),(((*!dustem_data.qsed).values)[idx_filt]-rms)/yy,(((*!dustem_data.qsed).values)[idx_filt]+rms)/yy,color='Dodger Blue' 
                        ENDIF

                    endif else begin ;The data points in the plot that remain unchanged

                        ;stop

                        xtit=textoidl('\lambda (\mum)')

                        ;if !run_pol then xtit = ''
                        cgplot,wavs,wavs/wavs,/xlog,/ys,xs=1,pos=position,noerase=1,color='Black',xr=xr,xtit=xtit,yr=[0.0,2.0],yticks=2,ymino=2,xticklen=0.1,ytickformat='(F6.2)',charsize=1.0

                        xyouts,pospltxt[0],pospltxt[1],textoidl('norm'),color=0,/normal,charsize=1.1
                    
                    endelse
                    
                
                endif else begin ; normal plot - STOPPED HERE FOR QSED

                    if keyword_set(refresh) then begin ;The data points in the plot are being refreshed
                        

                        if keyword_set(positive_only) then begin
     

                            if testpstv ne 0 then begin

                                
                                FOR i=0L,Ngrains-1 DO BEGIN
                                    polar_ippsi2iqu,st.sed.(i+1)*fact,specqgrain,specugrain,st.polsed.(i+1)*fact/spec,replicate(!dustem_psi,n_elements(spec)) ;temporary solution
                                    ;dustem_plot_mlog,st.polsed.wav,specqgrain,ppositions=position,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog 
                                    dustem_plot_mlog,st.polsed.wav,specqgrain,ppositions=position,/positive_only,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr
                                ENDFOR
                                
                                for i=0L,n_plgns-1 do begin
                                    IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_POLSED') THEN begin
                                        ;dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,1],ppositions=position, /overplot, noerase=1, color=clrs_plgns[i], linestyle=2,xr=xr,/xlog
                                        dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,1],ppositions=position,/positive_only,/overplot,noerase=1, color=clrs_plgns[i], linestyle=2 ,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr      
                                    ENDIF
                                endfor
                                
                                IF ct_spec NE 0 THEN BEGIN
                                    xx=((*!dustem_data.qsed).wav)[idx_spec]
                                    yy=prediction[idx_spec]
                                    ;dustem_plot_mlog,xx,yy,ppositions=position,/overplot, noerase=1, color='red',psym=7,syms=2,xr=xr,/xlog
                                    dustem_plot_mlog,xx,yy,ppositions=position,/positive_only, /overplot, noerase=1, color='red',psym=7,syms=2,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr 
                                ENDIF
                                
                                IF ct_filt NE 0 THEN BEGIN
                                    xx=((*!dustem_data.qsed).wav)[idx_filt]
                                    yy=prediction[idx_filt]
                                    ;dustem_plot_mlog,xx,yy,ppositions=position, /overplot, noerase=1, color='red',psym=6,syms=2,xr=xr,/xlog
                                    dustem_plot_mlog,xx,yy,ppositions=position,/positive_only, /overplot, noerase=1, color='red',psym=6,syms=2,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr
                                ENDIF
                                
                                dustem_plot_mlog,st.polsed.wav,specq,ppositions=position,/positive_only,/overplot,noerase=1,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr                                    
                            
                            endif
                                    

                        endif

                        
                        if keyword_set(negative_only) then begin
     

                            if testngtv ne 0 then begin

                                ;Plotting of the spectra of the dust species
                                FOR i=0L,Ngrains-1 DO BEGIN
                                    polar_ippsi2iqu,st.sed.(i+1)*fact,specqgrain,specugrain,st.polsed.(i+1)*fact/spec,replicate(!dustem_psi,n_elements(spec)) ;temporary solution
                                    ;dustem_plot_mlog,st.polsed.wav,specqgrain,ppositions=position,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog 
                                    dustem_plot_mlog,st.polsed.wav,specqgrain,ppositions=position,/negative_only,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr
                                ENDFOR
                                ;Plotting of the plugins
                                for i=0L,n_plgns-1 do begin
                                    IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_POLSED') THEN begin
                                        ;dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,1],ppositions=position, /overplot, noerase=1, color=clrs_plgns[i], linestyle=2,xr=xr,/xlog
                                        dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,1],ppositions=position,/negative_only,/overplot,noerase=1, color=clrs_plgns[i], linestyle=2 ,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr      
                                    ENDIF
                                endfor
                                ;PLotting of the interpolates corresponding to spectrum and filter points
                                IF ct_spec NE 0 THEN BEGIN
                                    xx=((*!dustem_data.qsed).wav)[idx_spec]
                                    yy=prediction[idx_spec]
                                    ;dustem_plot_mlog,xx,yy,ppositions=position,/overplot, noerase=1, color='red',psym=7,syms=2,xr=xr,/xlog
                                    dustem_plot_mlog,xx,yy,ppositions=position,/negative_only, /overplot, noerase=1, color='red',psym=7,syms=2,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr 
                                ENDIF
                                
                                IF ct_filt NE 0 THEN BEGIN
                                    xx=((*!dustem_data.qsed).wav)[idx_filt]
                                    yy=prediction[idx_filt]
                                    ;dustem_plot_mlog,xx,yy,ppositions=position, /overplot, noerase=1, color='red',psym=6,syms=2,xr=xr,/xlog
                                    dustem_plot_mlog,xx,yy,ppositions=position,/negative_only, /overplot, noerase=1, color='red',psym=6,syms=2,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr
                                ENDIF
                                ;Plotting of the total dust emission spectrum
                                dustem_plot_mlog,st.polsed.wav,specq,ppositions=position,/negative_only,/overplot,noerase=1,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr                                    
                            
                            endif
                                    

                        endif
                                                   
                      ;stop             
                    endif else begin ;The data points in the plot that remain unchanged.; DO NOT USE AN ELSE HERE. 
                        ;stop
                        ;cgaxis, xaxis=1,xlog=1, xs=1,charsize=1.5,xtickformat='(A1)'
                        xyouts,pospltxt[0],pospltxt[1],textoidl('Q_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.1  

                        ;if ct_hdnpts ne 0 then begin ;Hidden data points are present 

                        ;Locating the hidden spectrum and filter data points     
                        ;SADLY I STILL DON'T HAVE A SOLUTION FOR THE PLOTTING OF NULL VALUES.                                   
                        ;idx_filt_hdn = where(((*!dustem_show.qsed).filt_names)(idx_rmv_sed) NE 'SPECTRUM',ct_filt_hdn)
                        ;idx_spec_hdn = where(((*!dustem_show.qsed).filt_names)(idx_rmv_sed) EQ 'SPECTRUM',ct_spec_hdn)

                        if ct_hdnpts then begin
                            idx_filt_hdn_pstv = where(((*!dustem_show.qsed).filt_names)(idx_rmv_sed) NE 'SPECTRUM' and ((*!dustem_show.qsed).values)(idx_rmv_sed) gt 0,ct_filt_hdn_pstv)
                            idx_spec_hdn_pstv = where(((*!dustem_show.qsed).filt_names)(idx_rmv_sed) EQ 'SPECTRUM' and ((*!dustem_show.qsed).values)(idx_rmv_sed) gt 0,ct_spec_hdn_pstv)
                            idx_filt_hdn_ngtv = where(((*!dustem_show.qsed).filt_names)(idx_rmv_sed) NE 'SPECTRUM' and ((*!dustem_show.qsed).values)(idx_rmv_sed) lt 0,ct_filt_hdn_ngtv)
                            idx_spec_hdn_ngtv = where(((*!dustem_show.qsed).filt_names)(idx_rmv_sed) EQ 'SPECTRUM' and ((*!dustem_show.qsed).values)(idx_rmv_sed) lt 0,ct_spec_hdn_ngtv)
                        endif

                        if keyword_set(positive_only) then begin
                            ;stop

                            if testpstv ne 0 then begin

                            ;stop

                                ;plotsym, 0

                                if ct_hdnpts then begin

                                    if ct_spec_hdn_pstv ne 0 then begin
                                        xx = (((*!dustem_show.qsed).wav)[idx_rmv_sed])(idx_spec_hdn_pstv)
                                        yy = (((*!dustem_show.qsed).values)[idx_rmv_sed])(idx_spec_hdn_pstv)
                                        rms=3.*(((*!dustem_show.qsed).sigma)[idx_rmv_sed])(idx_spec_hdn_pstv)/2.
                                        
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,noerase=1,color='Black',/overplot,rms=rms,yr=yr,xtickformat='(A1)',xr=xr,xs=1,/xlog,/ylog;,psym=8,syms=0.8
                                    
                                    endif 
                                    
                                    if ct_filt_hdn_pstv ne 0 then begin
                                    
                                        xx = (((*!dustem_show.qsed).wav)[idx_rmv_sed])(idx_filt_hdn_pstv)
                                        yy = (((*!dustem_show.qsed).values)[idx_rmv_sed])(idx_filt_hdn_pstv)
                                        rms=3.*(((*!dustem_show.qsed).sigma)[idx_rmv_sed])(idx_filt_hdn_pstv)/2.
                                        
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr   
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,color='Black',/overplot,rms=rms,xr=xr,yr=yr,xtickformat='(A1)',/xlog,/ylog;,psym=8,syms=0.8
                                    
                                    endif

                                endif
                                

                                if ct_spec ne 0 then begin
                                
                                    rms=3.*((*!dustem_data.qsed).sigma)(idx_spec)/2.
                                    ;dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),-((*!dustem_data.qsed).values)(idx_spec),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,/nodata,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                    dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),((*!dustem_data.qsed).values)(idx_spec),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                    dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),((*!dustem_data.qsed).values)(idx_spec),ppositions=position,color='Dodger Blue',/positive_only,noerase=1,/overplot,rms=rms,xtit='',charsize=1.15,xtickformat='(A1)',xs=1,psym=16,syms=0.8,xr=xr,/xlog,/ylog,yr=yr,ytickformat='(A1)'     
                                 
                                endif
                                
                                if ct_filt ne 0 then begin
                                    
                                    rms=3.*((*!dustem_data.qsed).sigma)(idx_filt)/2.
                                   ; dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),-1.*((*!dustem_data.qsed).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,/nodata,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                    dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),((*!dustem_data.qsed).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                    dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),((*!dustem_data.qsed).values)(idx_filt),ppositions=position,color='Dodger Blue',/positive_only,noerase=1,/overplot,rms=rms,xtit='',charsize=1.15,xtickformat='(A1)',xs=1,psym=16,syms=0.8,xr=xr,/xlog,/ylog,yr=yr,ytickformat='(A1)'
                                        
                                endif
                            endif else begin
                            

                                if ct_hdnpts then begin

                                    if ct_spec_hdn_pstv ne 0 then begin
                                        xx = (((*!dustem_show.qsed).wav)[idx_rmv_sed])(idx_spec_hdn_pstv)
                                        yy = (((*!dustem_show.qsed).values)[idx_rmv_sed])(idx_spec_hdn_pstv)
                                        rms=3.*(((*!dustem_show.qsed).sigma)[idx_rmv_sed])(idx_spec_hdn_pstv)/2.
                                        
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,noerase=1,color='Black',/overplot,rms=rms,yr=yr,xtickformat='(A1)',xr=xr,xs=1,/xlog,/ylog;,psym=8,syms=0.8

                                    endif 
                                    
                                    if ct_filt_hdn_pstv ne 0 then begin

                                        xx = (((*!dustem_show.qsed).wav)[idx_rmv_sed])(idx_filt_hdn_pstv)
                                        yy = (((*!dustem_show.qsed).values)[idx_rmv_sed])(idx_filt_hdn_pstv)
                                        rms=3.*(((*!dustem_show.qsed).sigma)[idx_rmv_sed])(idx_filt_hdn_pstv)/2.

                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr   
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,color='Black',/overplot,rms=rms,xr=xr,yr=yr,xtickformat='(A1)',/xlog,/ylog;,psym=8,syms=0.8

                                    endif
                                    
                                    if ct_spec_hdn_pstv eq 0 and ct_filt_hdn_pstv eq 0 then begin

                                        if ct_spec ne 0 then dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),-((*!dustem_data.qsed).values)(idx_spec),ppositions=position,charsize=1.15,/nodata,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                            
                                        
                                        if ct_filt ne 0 then  dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),-((*!dustem_data.qsed).values)(idx_filt),/nodata,ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                            

                                    endif
                                endif ;add condition here for the plotting of empty plots using the lines above if they work.     

                            
                            endelse                           

                        endif 

                        if keyword_set(negative_only) then begin

                            if testngtv ne 0 then begin

                                 ;plotsym, 0

                                 if ct_hdnpts then begin

                                     if ct_spec_hdn_ngtv ne 0 then begin
                                         xx = (((*!dustem_show.qsed).wav)[idx_rmv_sed])(idx_spec_hdn_ngtv)
                                         yy = (((*!dustem_show.qsed).values)[idx_rmv_sed])(idx_spec_hdn_ngtv)
                                         rms=3.*(((*!dustem_show.qsed).sigma)[idx_rmv_sed])(idx_spec_hdn_ngtv)/2.
                                         
                                         dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr
                                         dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,noerase=1,color='Black',/overplot,rms=rms,yr=yr,xtickformat='(A1)',xr=xr,xs=1,/xlog,/ylog;,psym=8,syms=0.8

                                     endif 
                                     
                                     if ct_filt_hdn_ngtv ne 0 then begin
                                     
                                         xx = (((*!dustem_show.qsed).wav)[idx_rmv_sed])(idx_filt_hdn_ngtv)
                                         yy = (((*!dustem_show.qsed).values)[idx_rmv_sed])(idx_filt_hdn_ngtv)
                                         rms=3.*(((*!dustem_show.qsed).sigma)[idx_rmv_sed])(idx_filt_hdn_ngtv)/2.
                                         
                                         dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr   
                                         dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,color='Black',/overplot,rms=rms,xr=xr,yr=yr,xtickformat='(A1)',/xlog,/ylog;,psym=8,syms=0.8
                                     
                                     endif
                                

                                 endif

                                 if ct_spec ne 0 then begin
                                 
                                     rms=3.*((*!dustem_data.qsed).sigma)(idx_spec)/2.
                                     ;dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),-((*!dustem_data.qsed).values)(idx_spec),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,/nodata,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                    ; if ct_spec_hdn_ngtv ne 0 then dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),((*!dustem_data.qsed).values)(idx_spec),ppositions=position,/overplot,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr else begin

                                         dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),((*!dustem_data.qsed).values)(idx_spec),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                     ;endelse;,ytickformat='(A1)'
                                     dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),((*!dustem_data.qsed).values)(idx_spec),ppositions=position,color='Dodger Blue',/negative_only,noerase=1,/overplot,rms=rms,xtit='',charsize=1.15,xtickformat='(A1)',xs=1,xr=xr,/xlog,/ylog,yr=yr,ytickformat='(A1)';,psym=16,syms=0.8     

                                  
                                 endif
                                 
                                 if ct_filt ne 0 then begin
                                     
                                     rms=3.*((*!dustem_data.qsed).sigma)(idx_filt)/2.
                                    ; dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),-1.*((*!dustem_data.qsed).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,/nodata,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                     ;if ct_filt_hdn_ngtv ne 0 then  dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),((*!dustem_data.qsed).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',/overplot,psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr else begin

                                         dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),((*!dustem_data.qsed).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                     ;endelse ;,ytickformat='(A1)'

                                     dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),((*!dustem_data.qsed).values)(idx_filt),ppositions=position,color='Dodger Blue',/negative_only,noerase=1,/overplot,rms=rms,xtit='',charsize=1.15,xtickformat='(A1)',xs=1,xr=xr,/xlog,/ylog,yr=yr,ytickformat='(A1)'

                                         
                                 endif 

                            endif else begin

                                if ct_hdnpts then begin

                                    if ct_spec_hdn_ngtv ne 0 then begin
                                        xx = (((*!dustem_show.qsed).wav)[idx_rmv_sed])(idx_spec_hdn_ngtv)
                                        yy = (((*!dustem_show.qsed).values)[idx_rmv_sed])(idx_spec_hdn_ngtv)
                                        rms=3.*(((*!dustem_show.qsed).sigma)[idx_rmv_sed])(idx_spec_hdn_ngtv)/2.
                                        
                                        dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr
                                        dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,noerase=1,color='Black',/overplot,rms=rms,yr=yr,xtickformat='(A1)',xr=xr,xs=1,/xlog,/ylog;,psym=8,syms=0.8

                                    endif 
                                    
                                    if ct_filt_hdn_ngtv ne 0 then begin

                                        xx = (((*!dustem_show.qsed).wav)[idx_rmv_sed])(idx_filt_hdn_ngtv)
                                        yy = (((*!dustem_show.qsed).values)[idx_rmv_sed])(idx_filt_hdn_ngtv)
                                        rms=3.*(((*!dustem_show.qsed).sigma)[idx_rmv_sed])(idx_filt_hdn_ngtv)/2.

                                        dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr   
                                        dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,color='Black',/overplot,rms=rms,xr=xr,yr=yr,xtickformat='(A1)',/xlog,/ylog;,psym=8,syms=0.8

                                    endif
                                    
                                    if ct_spec_hdn_ngtv eq 0 and ct_filt_hdn_ngtv eq 0 then begin

                                        if ct_spec ne 0 then dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_spec),-((*!dustem_data.qsed).values)(idx_spec),ppositions=position,charsize=1.15,/nodata,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                            
                                        
                                        if ct_filt ne 0 then  dustem_plot_mlog,((*!dustem_data.qsed).wav)(idx_filt),-((*!dustem_data.qsed).values)(idx_filt),/nodata,ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                            

                                    endif
                                        
                                endif    

                            endelse
                        
                        endif
                        
                    
                    endelse 
                
                
                
                endelse 
            
            endelse ;

        
        END
        
        'USED': begin
            ;SIGN-RELATED PARAMETERS/LOOPS HERE?
            ;negative & positive values regardless of data type (SPECTRUM or FILTER data points)

            varvar=where((*!dustem_data.used).values LT 0, testngtv)
            varvar=where((*!dustem_data.used).values GT 0, testpstv)

            ;stop
            idx_filt=where((*!dustem_data.used).filt_names NE 'SPECTRUM', ct_filt)
            idx_spec=where((*!dustem_data.used).filt_names EQ 'SPECTRUM' , ct_spec)
            ;Plotting of frequency axis
            ;cgaxis, xaxis=1, xlog=1, xs=1, xminor=10;, xticklen=0.05, xrange=((!const.c*1E6/(_extra.(ind_xr)))*1E-9),charsize=1.15,title=textoidl('\nu (GHz)') 
            
            ;stop
            ;Locating all the hidden data points (spectrum+filter)
            match2,((*!dustem_data.used).wav),((*!dustem_show.used).wav),fit_sedpts,show_sedpts ;only show_sedpts is needed
            idx_rmv_sed=where(show_sedpts eq -1, ct_hdnpts) ; indices of the points to hide
            

            stop

            ;#1) get the plotting keywords (pertaining to each data set) @here when the _extra structure is ready
            
            if keyword_set(nodata) then begin ;when the data is not present
            
                if keyword_set(norm) then begin ;normalized plot
                    
                    xtit=textoidl('\lambda (\mum)')
                    if !run_pol then xtit = ''
                    cgplot,wavs,wavs/wavs,/xlog,/ys,xs=1,pos=position,noerase=1,xtickformat='(A1)',color='Black',xr=xr,xtit=xtit,yr=[0.0,2.0],yticks=2,ymino=2,xticklen=0.1,ytickformat='(F6.2)',charsize=1.0
                    xyouts,pospltxt[0],pospltxt[1],textoidl('norm'),color=0,/normal,charsize=1.1                        
                
                endif else begin ;normal plot
                    
                    cgplot,wavs,wavs,/nodata,/ylog,/xlog,/ys,xs=1,pos=position,noerase=1,charsize=1.15,xtickformat='(A1)',color='Powder Blue',xr=xr,xtit='',yr=yr,psym=8,syms=0.8  
                    ;cgaxis, xaxis=1 ,xlog=1 ,xrange=((!const.c*1E6/xr)*1E-9),charsize=1.15,title=textoidl('\nu (GHz)'),xticklen=0.05,xminor=10
                    xyouts,pospltxt[0],pospltxt[1],textoidl('U_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.1
                  
                endelse  
                
            
            endif else begin ;when the data is present 
                
                if keyword_set(norm) then begin 
                    
                    if keyword_set(refresh) then begin ;The data points in the plot that are being refreshed 
                        
                        ;MAJOR LOOP OVER THE SING??? - YES BECAUSE YOU NEED TO KNOW WHICH ONE IS THE 
                
                        IF ct_spec NE 0 THEN BEGIN
                            xx=((*!dustem_data.used).wav)[idx_spec]
                            yy=prediction[idx_spec]
                            rms=3.*((*!dustem_data.used).sigma)(idx_spec)/2.
;                             if testsgq ne 0 then dustem_plot_mlog,xx,((*!dustem_data.used).values)(idx_spec),ppositions=position,psym=16,color='Powder Blue',syms=0.8,noerase=1,/negative_only,/overplot else $
;                                 dustem_plot_mlog,xx,((*!dustem_data.used).values)(idx_spec),ppositions=position,((*!dustem_data.used).values)[idx_spec]/yy,psym=16,color='Powder Blue',syms=0.8,noerase=1,/positive_only,/overplot
                            cgoplot,xx,((*!dustem_data.used).values)(idx_spec)/yy,pos=position,psym=16,color='Powder Blue',syms=0.8,noerase=1 
                            cgerrplot,((*!dustem_data.used).wav)(idx_spec),(((*!dustem_data.used).values)[idx_spec]-rms)/yy,(((*!dustem_data.used).values)[idx_spec]+rms)/yy,color='Powder Blue'
                        
                        ENDIF
                        
                        IF ct_filt NE 0 THEN BEGIN
                            ;stop
                            xx=((*!dustem_data.used).wav)[idx_filt]
                            yy=prediction[idx_filt]
                            rms=3.*((*!dustem_data.used).sigma)(idx_filt)/2. 
;                             if testsgq ne 0 then dustem_plot_mlog,xx,((*!dustem_data.used).values)(idx_filt),ppositions=position,psym=16,color='Dodger Blue',syms=0.8,noerase=1,/negative_only,/overplot else $
;                                 dustem_plot_mlog,xx,((*!dustem_data.used).values)(idx_filt),ppositions=position,psym=16,color='Dodger Blue',syms=0.8,noerase=1,/positive_only,/overplot
                            cgoplot,xx,((*!dustem_data.used).values)(idx_filt)/yy,pos=position,psym=16,color='Dodger Blue',syms=0.8,noerase=1 
                            cgerrplot,((*!dustem_data.used).wav)(idx_filt),(((*!dustem_data.used).values)[idx_filt]-rms)/yy,(((*!dustem_data.used).values)[idx_filt]+rms)/yy,color='Dodger Blue' 
                        ENDIF
      
                        
                    endif else begin ;The data points in the plot that remain unchanged
                        ;stop
                        xtit=textoidl('\lambda (\mum)')

                        ;if !run_pol then xtit = ''
                        cgplot,wavs,wavs/wavs,/xlog,/ys,xs=1,pos=position,noerase=1,color='Black',xr=xr,xtit=xtit,yr=[0.0,2.0],yticks=2,ymino=2,xticklen=0.1,ytickformat='(F6.2)',charsize=1.0

                        xyouts,pospltxt-[0],pospltxt[1],textoidl('norm'),color=0,/normal,charsize=1.1

                    
                    endelse
                    
                
                endif else begin ; normal plot - STOPPED HERE FOR used
                              
                    if keyword_set(refresh) then begin ;The data points in the plot are being refreshed
                        
                        if keyword_set(positive_only) then begin
     

                            if testpstv ne 0 then begin

                                
                                FOR i=0L,Ngrains-1 DO BEGIN
                                    polar_ippsi2iqu,st.sed.(i+1)*fact,specqgrain,specugrain,st.polsed.(i+1)*fact/spec,replicate(!dustem_psi,n_elements(spec)) ;temporary solution
                                    ;dustem_plot_mlog,st.polsed.wav,specqgrain,ppositions=position,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog 
                                    dustem_plot_mlog,st.polsed.wav,specugrain,ppositions=position,/positive_only,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr
                                ENDFOR
                                
                                for i=0L,n_plgns-1 do begin
                                    IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_POLSED') THEN begin
                                        ;dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,1],ppositions=position, /overplot, noerase=1, color=clrs_plgns[i], linestyle=2,xr=xr,/xlog
                                        dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,2],ppositions=position,/positive_only,/overplot,noerase=1, color=clrs_plgns[i], linestyle=2 ,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr      
                                    ENDIF
                                endfor
                                
                                IF ct_spec NE 0 THEN BEGIN
                                    xx=((*!dustem_data.used).wav)[idx_spec]
                                    yy=prediction[idx_spec]
                                    ;dustem_plot_mlog,xx,yy,ppositions=position,/overplot, noerase=1, color='red',psym=7,syms=2,xr=xr,/xlog
                                    dustem_plot_mlog,xx,yy,ppositions=position,/positive_only, /overplot, noerase=1, color='red',psym=7,syms=2,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr 
                                ENDIF
                                
                                IF ct_filt NE 0 THEN BEGIN
                                    xx=((*!dustem_data.used).wav)[idx_filt]
                                    yy=prediction[idx_filt]
                                    ;dustem_plot_mlog,xx,yy,ppositions=position, /overplot, noerase=1, color='red',psym=6,syms=2,xr=xr,/xlog
                                    dustem_plot_mlog,xx,yy,ppositions=position,/positive_only, /overplot, noerase=1, color='red',psym=6,syms=2,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr
                                ENDIF
                                
                                dustem_plot_mlog,st.polsed.wav,specu,ppositions=position,/positive_only,/overplot,noerase=1,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr                                    
                            
                            endif
                                    
                        
                        endif
                        
                        
                        if keyword_set(negative_only) then begin
     

                            if testngtv ne 0 then begin

                                ;Plotting of the spectra of the dust species
                                FOR i=0L,Ngrains-1 DO BEGIN
                                    polar_ippsi2iqu,st.sed.(i+1)*fact,specqgrain,specugrain,st.polsed.(i+1)*fact/spec,replicate(!dustem_psi,n_elements(spec)) ;temporary solution
                                    ;dustem_plot_mlog,st.polsed.wav,specqgrain,ppositions=position,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog 
                                    dustem_plot_mlog,st.polsed.wav,specugrain,ppositions=position,/negative_only,/overplot,noerase=1,color=use_cols[i],xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr
                                ENDFOR
                                ;Plotting of the plugins
                                for i=0L,n_plgns-1 do begin
                                    IF total(strsplit((*(*!dustem_scope).(i)),'+',/extract) EQ 'ADD_POLSED') THEN begin
                                        ;dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,1],ppositions=position, /overplot, noerase=1, color=clrs_plgns[i], linestyle=2,xr=xr,/xlog
                                        dustem_plot_mlog,st.polsed.wav,(*(*!dustem_plugin).(i))[*,2],ppositions=position,/negative_only,/overplot,noerase=1, color=clrs_plgns[i], linestyle=2 ,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr      
                                    ENDIF
                                endfor
                                ;PLotting of the interpolates corresponding to spectrum and filter points
                                IF ct_spec NE 0 THEN BEGIN
                                    xx=((*!dustem_data.used).wav)[idx_spec]
                                    yy=prediction[idx_spec]
                                    ;dustem_plot_mlog,xx,yy,ppositions=position,/overplot, noerase=1, color='red',psym=7,syms=2,xr=xr,/xlog
                                    dustem_plot_mlog,xx,yy,ppositions=position,/negative_only, /overplot, noerase=1, color='red',psym=7,syms=2,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr 
                                ENDIF
                                
                                IF ct_filt NE 0 THEN BEGIN
                                    xx=((*!dustem_data.used).wav)[idx_filt]
                                    yy=prediction[idx_filt]
                                    ;dustem_plot_mlog,xx,yy,ppositions=position, /overplot, noerase=1, color='red',psym=6,syms=2,xr=xr,/xlog
                                    dustem_plot_mlog,xx,yy,ppositions=position,/negative_only, /overplot, noerase=1, color='red',psym=6,syms=2,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr
                                ENDIF
                                ;Plotting of the total dust emission spectrum
                                dustem_plot_mlog,st.polsed.wav,specu,ppositions=position,/negative_only,/overplot,noerase=1,xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=yr                                    

                            endif
                                    

                        
                        endif

                                                   
                      ;stop             
                    endif else begin ;The data points in the plot that remain unchanged.

                        ;stop

                        ;cgaxis, xaxis=1,xlog=1, xs=1,charsize=1.5,xtickformat='(A1)'
                        xyouts,pospltxt[0],pospltxt[1],textoidl('U_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.1  

                        ;if ct_hdnpts ne 0 then begin ;Hidden data points are present 
                        
                        ;Locating the hidden spectrum and filter data points     
                        ;SADLY I STILL DON'T HAVE A SOLUTION FOR THE PLOTTING OF NULL VALUES.                                   
                        ;idx_filt_hdn = where(((*!dustem_show.used).filt_names)(idx_rmv_sed) NE 'SPECTRUM',ct_filt_hdn)
                        ;idx_spec_hdn = where(((*!dustem_show.used).filt_names)(idx_rmv_sed) EQ 'SPECTRUM',ct_spec_hdn)

                        if ct_hdnpts then begin
                            idx_filt_hdn_pstv = where(((*!dustem_show.used).filt_names)(idx_rmv_sed) NE 'SPECTRUM' and ((*!dustem_show.used).values)(idx_rmv_sed) gt 0,ct_filt_hdn_pstv)
                            idx_spec_hdn_pstv = where(((*!dustem_show.used).filt_names)(idx_rmv_sed) EQ 'SPECTRUM' and ((*!dustem_show.used).values)(idx_rmv_sed) gt 0,ct_spec_hdn_pstv)
                            idx_filt_hdn_ngtv = where(((*!dustem_show.used).filt_names)(idx_rmv_sed) NE 'SPECTRUM' and ((*!dustem_show.used).values)(idx_rmv_sed) lt 0,ct_filt_hdn_ngtv)
                            idx_spec_hdn_ngtv = where(((*!dustem_show.used).filt_names)(idx_rmv_sed) EQ 'SPECTRUM' and ((*!dustem_show.used).values)(idx_rmv_sed) lt 0,ct_spec_hdn_ngtv)
                        endif
                        stop

                        
                        if keyword_set(positive_only) then begin
                            ;stop

                            if testpstv ne 0 then begin

                            ;stop
                                plotsym, 0
                                
                                 
                                if ct_spec ne 0 then begin
                                
                                    rms=3.*((*!dustem_data.used).sigma)(idx_spec)/2.
                                    ;dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),-((*!dustem_data.used).values)(idx_spec),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,/nodata,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                    ;if ct_spec_hdn_pstv ne 0 then dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),((*!dustem_data.used).values)(idx_spec),ppositions=position,charsize=1.15,/overplot,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr else begin

                                        dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),((*!dustem_data.used).values)(idx_spec),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr

                                    ;endelse;,ytickformat='(A1)'

                                    dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),((*!dustem_data.used).values)(idx_spec),ppositions=position,color='Dodger Blue',/positive_only,noerase=1,/overplot,rms=rms,xtit='',xtickformat='(A1)',xs=1,xr=xr,/xlog,/ylog,yr=yr,ytickformat='(A1)'  ;,charsize=1.15,psym=16,syms=0.8
                                 
                                endif
                                
                                if ct_filt ne 0 then begin
                                    
                                    rms=3.*((*!dustem_data.used).sigma)(idx_filt)/2.
                                   ; dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),-1.*((*!dustem_data.used).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,/nodata,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                    ;if ct_filt_hdn_pstv ne 0 then dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),((*!dustem_data.used).values)(idx_filt),/overplot,ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr else begin

                                        dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),((*!dustem_data.used).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr

                                    ;endelse;,ytickformat='(A1)'

                                    dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),((*!dustem_data.used).values)(idx_filt),ppositions=position,color='Dodger Blue',/positive_only,noerase=1,/overplot,rms=rms,xtit='',xtickformat='(A1)',xs=1,xr=xr,/xlog,/ylog,yr=yr,ytickformat='(A1)';,charsize=1.15,psym=16,syms=0.8
                                        
                                endif
                                

                                if ct_hdnpts then begin

                                    if ct_spec_hdn_pstv ne 0 then begin
                                        ;stop
                                        xx = (((*!dustem_show.used).wav)[idx_rmv_sed])(idx_spec_hdn_pstv)
                                        yy = (((*!dustem_show.used).values)[idx_rmv_sed])(idx_spec_hdn_pstv)
                                        rms=3.*(((*!dustem_show.used).sigma)[idx_rmv_sed])(idx_spec_hdn_pstv)/2.
                                        
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',/overplot,xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,noerase=1,color='Black',/overplot,rms=rms,yr=yr,xtickformat='(A1)',xr=xr,xs=1,/xlog,/ylog;,psym=8,syms=0.8

                                    endif 
                                    
                                    if ct_filt_hdn_pstv ne 0 then begin
                                        ;stop
                                        xx = (((*!dustem_show.used).wav)[idx_rmv_sed])(idx_filt_hdn_pstv)
                                        yy = (((*!dustem_show.used).values)[idx_rmv_sed])(idx_filt_hdn_pstv)
                                        rms=3.*(((*!dustem_show.used).sigma)[idx_rmv_sed])(idx_filt_hdn_pstv)/2.
                                        
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,charsize=1.15,/overplot,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr   
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,color='Black',/overplot,rms=rms,xr=xr,yr=yr,xtickformat='(A1)',/xlog,/ylog;,psym=8,syms=0.8
                                    
                                    endif
                                endif   

                            endif else begin

                                ;stop
                                if ct_hdnpts then begin
                                    if ct_spec_hdn_pstv ne 0 then begin

                                        xx = (((*!dustem_show.used).wav)[idx_rmv_sed])(idx_spec_hdn_pstv)
                                        yy = (((*!dustem_show.used).values)[idx_rmv_sed])(idx_spec_hdn_pstv)
                                        rms=3.*(((*!dustem_show.used).sigma)[idx_rmv_sed])(idx_spec_hdn_pstv)/2.
                                        
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,noerase=1,color='Black',/overplot,rms=rms,yr=yr,xtickformat='(A1)',xr=xr,xs=1,/xlog,/ylog;,psym=8,syms=0.8

                                    endif 
                                    
                                    if ct_filt_hdn_pstv ne 0 then begin

                                        xx = (((*!dustem_show.used).wav)[idx_rmv_sed])(idx_filt_hdn_pstv)
                                        yy = (((*!dustem_show.used).values)[idx_rmv_sed])(idx_filt_hdn_pstv)
                                        rms=3.*(((*!dustem_show.used).sigma)[idx_rmv_sed])(idx_filt_hdn_pstv)/2.

                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr   
                                        dustem_plot_mlog,xx,yy,ppositions=position,/positive_only,xs=1,noerase=1,color='Black',/overplot,rms=rms,xr=xr,yr=yr,xtickformat='(A1)',/xlog,/ylog;,psym=8,syms=0.8
                                    
                                    endif

                                    if ct_spec_hdn_pstv eq 0 and ct_filt_hdn_pstv eq 0 then begin
                                       ; stop
                                        if ct_spec ne 0 then dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),-((*!dustem_data.used).values)(idx_spec),ppositions=position,charsize=1.15,/nodata,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                            

                                        if ct_filt ne 0 then  dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),-((*!dustem_data.used).values)(idx_filt),/nodata,ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/positive_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                            

                                    endif
                                endif

                            endelse                          

                        
                        endif 
                        
                        if keyword_set(negative_only) then begin

                            if testngtv ne 0 then begin

                                 
                                 plotsym, 0
                                 
                                 
                                 if ct_spec ne 0 then begin
                                 
                                     rms=3.*((*!dustem_data.used).sigma)(idx_spec)/2.
                                     ;dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),-((*!dustem_data.used).values)(idx_spec),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,/nodata,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                     ;if ct_spec_hdn_ngtv ne 0 then dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),((*!dustem_data.used).values)(idx_spec),ppositions=position,/overplot,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr else begin

                                         dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),((*!dustem_data.used).values)(idx_spec),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                     ;endelse;,ytickformat='(A1)'

                                     dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),((*!dustem_data.used).values)(idx_spec),ppositions=position,color='Dodger Blue',/negative_only,noerase=1,/overplot,rms=rms,xtit='',charsize=1.15,xtickformat='(A1)',xs=1,psym=16,syms=0.8,xr=xr,/xlog,/ylog,yr=yr,ytickformat='(A1)'     
                                  
                                 endif
                                 
                                 if ct_filt ne 0 then begin
                                     
                                     rms=3.*((*!dustem_data.used).sigma)(idx_filt)/2.
                                    ; dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),-1.*((*!dustem_data.used).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,/nodata,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                     ;if ct_filt_hdn_ngtv ne 0 then  dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),((*!dustem_data.used).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',/overplot,psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr else begin

                                         dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),((*!dustem_data.used).values)(idx_filt),ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'

                                     ;endelse ;,ytickformat='(A1)'

                                     
                                     dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),((*!dustem_data.used).values)(idx_filt),ppositions=position,color='Dodger Blue',/negative_only,noerase=1,/overplot,rms=rms,xtit='',charsize=1.15,xtickformat='(A1)',xs=1,psym=16,syms=0.8,xr=xr,/xlog,/ylog,yr=yr,ytickformat='(A1)'
                                         
                                 endif
                                 

                                 if ct_hdnpts then begin

                                     if ct_spec_hdn_ngtv ne 0 then begin
                                         xx = (((*!dustem_show.used).wav)[idx_rmv_sed])(idx_spec_hdn_ngtv)
                                         yy = (((*!dustem_show.used).values)[idx_rmv_sed])(idx_spec_hdn_ngtv)
                                         rms=3.*(((*!dustem_show.used).sigma)[idx_rmv_sed])(idx_spec_hdn_ngtv)/2.
                                         
                                         dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',/overplot,xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr
                                         dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,noerase=1,color='Black',/overplot,rms=rms,yr=yr,xtickformat='(A1)',xr=xr,xs=1,/xlog,/ylog;,psym=8,syms=0.8

                                     endif 

                                     if ct_filt_hdn_ngtv ne 0 then begin
                                     
                                         xx = (((*!dustem_show.used).wav)[idx_rmv_sed])(idx_filt_hdn_ngtv)
                                         yy = (((*!dustem_show.used).values)[idx_rmv_sed])(idx_filt_hdn_ngtv)
                                         rms=3.*(((*!dustem_show.used).sigma)[idx_rmv_sed])(idx_filt_hdn_ngtv)/2.
                                         
                                         dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',/overplot,xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr   
                                         dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,color='Black',/overplot,rms=rms,xr=xr,yr=yr,xtickformat='(A1)',/xlog,/ylog;,psym=8,syms=0.8
                                     
                                     endif

                                 endif 

                            endif else begin

                                if ct_hdnpts then begin

                                    if ct_spec_hdn_ngtv ne 0 then begin
                                        xx = (((*!dustem_show.used).wav)[idx_rmv_sed])(idx_spec_hdn_ngtv)
                                        yy = (((*!dustem_show.used).values)[idx_rmv_sed])(idx_spec_hdn_ngtv)
                                        rms=3.*(((*!dustem_show.used).sigma)[idx_rmv_sed])(idx_spec_hdn_ngtv)/2.
                                        
                                        dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr
                                        dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,noerase=1,color='Black',/overplot,rms=rms,yr=yr,xtickformat='(A1)',xr=xr,xs=1,/xlog,/ylog;,psym=8,syms=0.8

                                    endif 

                                    if ct_filt_hdn_ngtv ne 0 then begin
                                    
                                        xx = (((*!dustem_show.used).wav)[idx_rmv_sed])(idx_filt_hdn_ngtv)
                                        yy = (((*!dustem_show.used).values)[idx_rmv_sed])(idx_filt_hdn_ngtv)
                                        rms=3.*(((*!dustem_show.used).sigma)[idx_rmv_sed])(idx_filt_hdn_ngtv)/2.

                                        dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,charsize=1.15,xtickformat='(A1)',xr=xr,color='Black',psym=16,syms=0.8,/xlog,/ylog,yr=yr   
                                        dustem_plot_mlog,xx,yy,ppositions=position,/negative_only,xs=1,noerase=1,color='Black',/overplot,rms=rms,xr=xr,yr=yr,xtickformat='(A1)',/xlog,/ylog;,psym=8,syms=0.8
                                    
                                    endif

                                    if ct_spec_hdn_ngtv eq 0 and ct_filt_hdn_ngtv eq 0 then begin

                                        if ct_spec ne 0 then dustem_plot_mlog,((*!dustem_data.used).wav)(idx_spec),-((*!dustem_data.used).values)(idx_spec),ppositions=position,charsize=1.15,/nodata,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                            
                                        
                                        if ct_filt ne 0 then  dustem_plot_mlog,((*!dustem_data.used).wav)(idx_filt),-((*!dustem_data.used).values)(idx_filt),/nodata,ppositions=position,charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,xs=1,xr=xr,noerase=1,/negative_only,xtickformat='(A1)',xtit='',/xlog,/ylog,yr=yr;,ytickformat='(A1)'
                                            

                                    endif
                                endif

                            ;stop

                            endelse

                        endif

                        
                    
                    endelse 
                
                
                
                endelse 
            
            endelse ;

        
        end
        
        'QEXT': begin
        
        end
        
        'UEXT': begin
        
        end
    
    endcase


endif











 


 
  












END