PRO dustemcgwin_dataset, st, dustem_interp, dustem_spec, extra_spec, dataset=dataset, norm=norm, refresh=refresh, nodata=nodata, position=position,positive_only=positive_only, negative_only=negative_only, _extra=_extra

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

if !run_pol then begin
    if isa(position) then begin
        if keyword_set(norm) then pospltxt = [position(0)+0.02,position(3)-0.02] else pospltxt = [position(0)+0.02,position(3)-0.03]  
    endif
endif else begin
    if isa(position) then pospltxt = [position(0)+0.02,position(3)-0.05] ;hard-coded but we can find a way 
endelse 

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

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.

clrs_plgns = ['Rosy Brown','Gold','Light Coral','Slate Blue','Dark Khaki','Salmon','Dark Green'] ;FOR NOW

;NB: plugins need to have different colors for extinction because they are not the same plugins. New array required.

scopes=tag_names((*!dustem_plugin))

tgnms_extra = tag_names(_extra)

ind_xrm = where(strmid(tgnms_extra,0,4) EQ 'XR_M',ct_xrm)
ind_xrx = where(strmid(tgnms_extra,0,4) EQ 'XR_X',ct_xrx)
ind_yrm = where(strmid(tgnms_extra,0,4) EQ 'YR_M',ct_yrm)
ind_yrx = where(strmid(tgnms_extra,0,4) EQ 'YR_X',ct_yrx)
ct_m = ct_xrm+ct_yrm
ct_x = ct_xrx+ct_yrx

IF ct_m+ct_x NE 0 THEN BEGIN

    IF ct_xrm NE 0 THEN xr_m = (_extra.(ind_xrm))
    IF ct_xrx NE 0 THEN xr_x = (_extra.(ind_xrx))
    IF ct_yrm NE 0 THEN yr_m = (_extra.(ind_yrm))
    IF ct_yrx NE 0 THEN yr_x = (_extra.(ind_yrx))

ENDIF ELSE BEGIN

    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))
    
ENDELSE 

frmt0='(A46)'
frmt1='(1E11.4)'
frmt2='(10F10.2)'

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

;NB: SUSPETING A MAJR ERROR IN THE MATCHING OF STRUCTURE (FOR THE PLOTTING OF THE HIDDEN POINTS)
;INVERTING ALL THE INDICES THAT ARE CONCERNED BY THIS. 

;THIS CAN CREATE ERRORS (EVEN THOUGH IT WAS WRONG AND WORKED) SO REMEMBER YOU DID THIS. 

;I DO NOT REMEMBER RUNNING ANY OF THE TESTS HERE. 

if keyword_set(dataset) then begin
;!run_pol is implied for QSED/USED/POLSED etc...
    Case strupcase(dataset) of 
    
        'SED': begin
            

            IF ct_m NE 0 then begin
                xr=xr_m
                yr=yr_m 
            endif

            
            vectw=DINDGEN(1001)*(alog10(1E7) - alog10(1E5))/(1000 - 1L) + alog10(1E5)
            vectw=10^vectw[1:*]
            vectw=[wavs,vectw]
            vectx=vectw*0+1
            

            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,vectw,vectx,/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
                
                if not keyword_set(norm) then begin

                    ;/NODATA    

                    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=1.3;,charthick=2.0

                ;endelse  
                endif

            endif ;else begin ;when the data is present - to be replaced by if to test as a solution to the refreshing problem
            if not keyword_set(nodata) then begin

                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=dustem_interp[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=dustem_interp[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.
                        ;stop

                    if not keyword_set(refresh) then begin 
                        ;stop   

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

                        if !run_pol then begin
                            xtit = ''
                            xtickformat='(A1)'
                        endif else xtickformat='(F10.2)' ;MAYBE YOU'LL CHANGE THIS FORMAT TO EXPONENTIAL NOTATION

                        cgplot,vectw,vectx,/xlog,/ys,xs=1,pos=position,noerase=1,xtickformat=xtickformat,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

                endif ;else begin ; normal plot
                if not keyword_set(norm) then begin        

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

                            cgoplot,xx,yy,color='Indian Red',pos=position,psym=7,syms=1,noerase=1   

                        ENDIF
                        

                        
                        IF ct_filt NE 0 THEN BEGIN

                            xx=((*(*!dustem_data).sed).wav)[idx_filt]

                            yy=dustem_interp[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,dustem_spec,pos=position,noerase=1,/xlog,/ys,/xs,/ylog

                    endif ;else begin ;The data points in the plot that remain unchanged.
                        ;stop
                    if not keyword_set(refresh) then begin

                        ;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=16,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=16,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=16,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/(xr))*1E-9),charsize=1.15,title=textoidl('\nu (GHz)')

                        xyouts,pospltxt[0],pospltxt[1],textoidl('I_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.3;,charthick=2.0

                        ;Locating all the hidden data points (spectrum+filter)

                        match2,((*(*!dustem_data).sed).wav),((*(*!dustem_show).sed).wav),show_sedpts,fit_sedpts ;only show_sedpts is needed

                        idx_rmv_sed=where(fit_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=16,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=16,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 
                    endif

                ;endelse 
                endif            
            ;endelse
            endif 

        ;stop    

        end
        

        'EXT': begin ;BE VERY CAREFUL THE EXTINCTION STRUCTURE AS REDERED BY DUSTEM IS DIFFERENT THAN THE EMISSION ONE

;             ;So far manually changing xr and yr.
;             
;             xr=[0.01,30]
;             yr=[1.00E-06,10]
            

            IF ct_x NE 0 then begin

                xr=xr_x 
                yr=yr_x
                
            ENDIF

            vectw=DINDGEN(1001)*(alog10(1E7) - alog10(1E5))/(1000 - 1L) + alog10(1E5)
            vectw=10^vectw[1:*]
            vectw=[wavs,vectw]
            vectx=vectw*0+1
            

            idx_filt=where((*(*!dustem_data).ext).filt_names NE 'SPECTRUM',ct_filt)
            idx_spec=where((*(*!dustem_data).ext).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('1/\lambda (\mum^{-1})')

                    if !run_pol then xtit = ''

                    cgplot,1/vectw,vectx,/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
                
                if not keyword_set(norm) then begin

                    ;/NODATA    

                    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('\tau_{EXT}'),color=0,/normal,charsize=1.3;,charthick=2.0

                  
                ;endelse  
                endif
            
            endif ;else begin ;when the data is present - to be replaced by if to test as a solution to the refreshing problem
            if not keyword_set(nodata) then begin
                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).ext).wav)[idx_spec]

                            yy=dustem_interp[idx_spec]

                            rms=3.*((*(*!dustem_data).ext).sigma)(idx_spec)/2.

                            indzero = where(yy NE 0, ct_zero)
                            IF ct_zero NE 0 THEN BEGIN

                                cgoplot,(1/xx)[indzero],(((*(*!dustem_data).ext).values)[idx_spec])[indzero]/yy[indzero],color='Powder Blue',psym=16,syms=0.8,noerase=1,pos=position
                                cgerrplot,(1/((*(*!dustem_data).ext).wav)(idx_spec))[indzero],((((*(*!dustem_data).ext).values)[idx_spec])[indzero]-rms[indzero])/yy[indzero],((((*(*!dustem_data).ext).values)[idx_spec])[indzero]+rms[indzero])/yy[indzero],color='Powder Blue'

                            ENDIF

                        ENDIF
                        
                        IF ct_filt NE 0 THEN BEGIN ; There are no filter points for now...

                            xx=((*(*!dustem_data).ext).wav)[idx_filt]

                            yy=dustem_interp[idx_filt]

                            rms=3.*((*(*!dustem_data).ext).sigma)(idx_filt)/2.

                            indzero = where(yy NE 0, ct_zero)
                            IF ct_zero NE 0 THEN BEGIN

                                cgoplot,(1/xx)[indzero],(((*(*!dustem_data).ext).values)[idx_filt])[indzero]/yy[indzero],psym=16,color='Dodger Blue',syms=0.8,noerase=1,pos=position
                                cgerrplot,(1/((*(*!dustem_data).ext).wav)(idx_filt))[indzero],((((*(*!dustem_data).ext).values)[idx_filt])[indzero]-rms[indzero])/yy[indzero],((((*(*!dustem_data).ext).values)[idx_filt])[indzero]+rms[indzero])/yy[indzero],color='Dodger Blue';,/overplot 

                            ENDIF

                        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.
                        ;stop
                        
                    if not keyword_set(refresh) then begin 
                        ;stop   

                        xtit=textoidl('1/\lambda (\mum^{-1})')

                        if !run_pol then begin
                            xtit = ''
                            xtickformat='(A1)'
                        endif else xtickformat='(F10.2)' ;MAYBE YOU'LL CHANGE THIS FORMAT TO EXPONENTIAL NOTATION

                        cgplot,1/vectw,vectx,/xlog,/ys,xs=1,pos=position,noerase=1,xtickformat=xtickformat,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
                    
                
                endif ;else begin ; normal plot
                if not keyword_set(norm) then begin        
                    if keyword_set(refresh) then begin ;The data points in the plot are being refreshed
                        
                        ;not so sure about the multiplicative factor
                        
                        ;Plotting of the spectra of the dust species

                        FOR i=0L,Ngrains-1 DO BEGIN

                            cgoplot,1/st.ext.wav,transpose((st.ext.(1))[i,*]+(st.ext.(2))[i,*])*(*!dustem_HCD)/1.0e21,color=use_cols[i],pos=position,noerase=1

                        ENDFOR

                                                
                        ;Plotting of the plugins.
                        for i=0L,n_plgns-1 do begin
                            
                            if isa((*!dustem_plugin).(0).spec) then begin 
                            
                                IF total(strsplit((*(*!dustem_plugin).(i).scope),'+',/extract) EQ 'ADD_EXT') THEN begin

                                    cgoplot,1/st.ext.wav,((*(*!dustem_plugin).(i).spec)[*,0]),color=clrs_plgns[i],pos=position,noerase=1,linestyle=2               

                                ENDIF
                                
                            endif
                            
                        endfor
                        
                                                
                        ;PLotting of the interpolates corresponding to spectrum and filter points
                           
                        IF ct_spec NE 0 THEN BEGIN
                        

                            xx=((*(*!dustem_data).ext).wav)[idx_spec]

                            yy=dustem_interp[idx_spec]

                            cgoplot,1/xx,yy,color='Indian Red',pos=position,psym=7,syms=1,noerase=1   

                        ENDIF
                        
                        
                        IF ct_filt NE 0 THEN BEGIN

                            xx=((*(*!dustem_data).ext).wav)[idx_filt]

                            yy=dustem_interp[idx_filt]

                            cgoplot,1/xx,yy,color='red',pos=position,psym=6,syms=2,noerase=1

                        ENDIF
                        
                        
                        ;Plotting of the total dust emission spectrum

                        cgoplot,1/st.ext.wav,dustem_spec,pos=position,noerase=1,/xlog,/ys,/xs,/ylog

                         
                                        
                                
                    endif ;else begin ;The data points in the plot that remain unchanged.
                        ;stop
                    if not keyword_set(refresh) then begin
                        ;Spectrum points are treated before for plotting reasons. 
                        if ct_spec ne 0 then begin 
                            
                            ;Plotting of spectrum data points (to be fitted)

                            cgplot,1/((*(*!dustem_data).ext).wav)(idx_spec),((*(*!dustem_data).ext).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=16,syms=0.8,ytickformat='dstmwrp_exp'                

                            
                            ;Plotting of the spectrum error points

                            rms=3.*((*(*!dustem_data).ext).sigma)(idx_spec)/2.
                            cgerrplot,1/((*(*!dustem_data).ext).wav)(idx_spec),((*(*!dustem_data).ext).values)(idx_spec)-rms,((*(*!dustem_data).ext).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,1/((*(*!dustem_data).ext).wav)(idx_filt),((*(*!dustem_data).ext).values)(idx_filt),charsize=1.15,color='Dodger Blue',psym=16,syms=0.8,pos=position,/ys,xs=9,noerase=1,xtickformat='(A1)',xr=xr,yr=yr,ytickformat='dstmwrp_exp',/ylog,/xlog else $
                                cgplot,1/((*(*!dustem_data).ext).wav)(idx_filt),((*(*!dustem_data).ext).values)(idx_filt),charsize=1.15,color='Dodger Blue',psym=16,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).ext).sigma)(idx_filt)/2.;/dustem_sed(idx_filt)
                            cgerrplot,1/((*(*!dustem_data).ext).wav)(idx_filt),((*(*!dustem_data).ext).values)(idx_filt)-rms,((*(*!dustem_data).ext).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*xr)*1E-9),charsize=1.15,title=textoidl('\nu (GHz)')

                        xyouts,pospltxt[0],pospltxt[1],textoidl('\tau_{EXT}'),color=0,/normal,charsize=1.3;,charthick=2.0

                         
                        ;Locating all the hidden data points (spectrum+filter)

                        match2,((*(*!dustem_data).ext).wav),((*(*!dustem_show).ext).wav),show_sedpts,fit_sedpts ;only show_sedpts is needed

                        idx_rmv_sed=where(fit_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).ext).filt_names))(idx_rmv_sed) NE 'SPECTRUM',ct_filt_hdn)
                        idx_spec_hdn = where(((*(*!dustem_show).ext).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,1/(((*(*!dustem_show).ext).wav)[idx_rmv_sed])(idx_spec_hdn),(((*(*!dustem_show).ext).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=16,syms=0.8

                                
                                ;Plotting of hidden spectrum error points

                                rms=3.*(((*(*!dustem_show).ext).sigma)[idx_rmv_sed])(idx_spec_hdn)/2.
                                cgerrplot,1/(((*(*!dustem_show).ext).wav)[idx_rmv_sed])(idx_spec_hdn),(((*(*!dustem_show).ext).values)[idx_rmv_sed])(idx_spec_hdn)-rms,(((*(*!dustem_show).ext).values)[idx_rmv_sed])(idx_spec_hdn)+rms,color='Black'

                            endif                                            
                            
                            if ct_filt_hdn then begin
                            ;Plotting of hidden filter data points 

                                cgoplot,1/(((*(*!dustem_show).ext).wav)[idx_rmv_sed])(idx_filt_hdn),(((*(*!dustem_show).ext).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=16,syms=0.8                                           

                                
                                ;Plotting of hidden filter error point

                                rms=3.*(((*(*!dustem_show).ext).sigma)[idx_rmv_sed])(idx_filt_hdn)/2.
                                cgerrplot,1/(((*(*!dustem_show).ext).wav)[idx_rmv_sed])(idx_filt_hdn),(((*(*!dustem_show).ext).values)[idx_rmv_sed])(idx_filt_hdn)-rms,(((*(*!dustem_show).ext).values)[idx_rmv_sed])(idx_filt_hdn)+rms,color='Black'

                                
                            endif
                                                           
                        endif    
                        
                        
                    
                    ;endelse 
                    endif
                
                
                ;endelse 
                endif            
            ;endelse
            endif
          

        
        end
        

        'POLEXT': begin 
            

            IF ct_x NE 0 then begin
                xr=xr_x
                yr=yr_x
            ENDIF

            
            vectw=DINDGEN(1001)*(alog10(1E7) - alog10(1E5))/(1000 - 1L) + alog10(1E5)
            vectw=10^vectw[1:*]
            vectw=[wavs,vectw]
            vectx=vectw*0+1
            

            idx_filt=where((*(*!dustem_data).polext).filt_names NE 'SPECTRUM',ct_filt)
            idx_spec=where((*(*!dustem_data).polext).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('1/\lambda (\mum^{_1})')

                    if !run_pol then xtit = ''

                    cgplot,1/vectw,vectx,/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

                    ;/NODATA

                    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('\tau_{PEXT}'),color=0,/normal,charsize=1.3;,charthick=2.0

                  
                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).polext).wav)[idx_spec]

                            yy=dustem_interp[idx_spec]

                            rms=3.*((*(*!dustem_data).polext).sigma)(idx_spec)/2.

                            indzero = where(yy NE 0, ct_zero)
                            
                            IF ct_zero NE 0 THEN BEGIN
                            

                                cgoplot,(1/xx)[indzero],(((*(*!dustem_data).polext).values)[idx_spec])[indzero]/yy[indzero],color='Powder Blue',psym=16,syms=0.8,noerase=1,pos=position
                                cgerrplot,(1/((*(*!dustem_data).polext).wav)(idx_spec))[indzero],((((*(*!dustem_data).polext).values)[idx_spec])[indzero]-rms[indzero])/yy[indzero],((((*(*!dustem_data).polext).values)[idx_spec])[indzero]+rms[indzero])/yy[indzero],color='Powder Blue'

                            
                            ENDIF

                        ENDIF
                        
                        IF ct_filt NE 0 THEN BEGIN

                            xx=((*(*!dustem_data).polext).wav)[idx_filt]

                            yy=dustem_interp[idx_filt]

                            rms=3.*((*(*!dustem_data).polext).sigma)(idx_filt)/2.

                            indzero = where(yy NE 0, ct_zero)
                            IF ct_zero NE 0 THEN BEGIN
                             

                                cgoplot,(1/xx)[indzero],(((*(*!dustem_data).polext).values)[idx_filt])[indzero]/yy[indzero],psym=16,color='Dodger Blue',syms=0.8,noerase=1,pos=position
                                cgerrplot,(1/((*(*!dustem_data).polext).wav)(idx_filt))[indzero],((((*(*!dustem_data).polext).values)[idx_filt])[indzero]-rms[indzero])/yy[indzero],((((*(*!dustem_data).polext).values)[idx_filt])[indzero]+rms[indzero])/yy[indzero],color='Dodger Blue';,/overplot 

                            
                            ENDIF

                        ENDIF
                            
                        

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

                        xtit=textoidl('1/\lambda (\mum^{-1})')

                        if !run_pol then xtit = ''

                        cgplot,1/vectw,vectx,/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

                            vecto = transpose(((st.polext.(1))[i,*]+(st.polext.(2))[i,*]))
                            cgoplot,1/st.polext.wav,vecto*(*!dustem_HCD)/1.0e21,color=use_cols[i],pos=position,noerase=1

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

                            If isa((*!dustem_plugin).(0).spec) then begin

                                IF total(strsplit((*(*!dustem_plugin).(i).scope),'+',/extract) EQ 'ADD_POLEXT') THEN begin

                                    cgoplot,1/st.polext.wav,sqrt(((*(*!dustem_plugin).(i).spec)[*,1])^2+((*(*!dustem_plugin).(i).spec)[*,2])^2),color=clrs_plgns[i],pos=position,noerase=1,linestyle=2               

                                ENDIF 
                            endif

                        endfor
                                                
                        ;PLotting of the interpolates corresponding to spectrum and filter points
                           
                        IF ct_spec NE 0 THEN BEGIN
                        

                            xx=((*(*!dustem_data).polext).wav)[idx_spec]

                            yy=dustem_interp[idx_spec]

                            cgoplot,1/xx,yy,color='Indian Red',pos=position,psym=7,syms=2,noerase=1   

                        ENDIF
                        
                        
                        IF ct_filt NE 0 THEN BEGIN

                            xx=((*(*!dustem_data).polext).wav)[idx_filt]

                            yy=dustem_interp[idx_filt]

                            cgoplot,1/xx,yy,color='red',pos=position,psym=6,syms=2,noerase=1

                        ENDIF
                        
                        ;Plotting of the total dust emission spectru

                        cgoplot,1/st.polext.wav,dustem_spec,pos=position,noerase=1,/xlog,/ys,/xs,/ylog

                        ;cgoplot,st.polsed.wav,st.polsed.em_tot*fact,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,1/((*(*!dustem_data).polext).wav)(idx_spec),((*(*!dustem_data).polext).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).polext).sigma)(idx_spec)/2.
                            cgerrplot,1/((*(*!dustem_data).polext).wav)(idx_spec),((*(*!dustem_data).polext).values)(idx_spec)-rms,((*(*!dustem_data).polext).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,1/((*(*!dustem_data).polext).wav)(idx_filt),((*(*!dustem_data).polext).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,1/((*(*!dustem_data).polext).wav)(idx_filt),((*(*!dustem_data).polext).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).polext).sigma)(idx_filt)/2.;/dustem_polsed(idx_filt)
                            cgerrplot,1/((*(*!dustem_data).polext).wav)(idx_filt),((*(*!dustem_data).polext).values)(idx_filt)-rms,((*(*!dustem_data).polext).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*xr)*1E-9),charsize=1.15,title=textoidl('\nu (GHz)')

                        xyouts,pospltxt[0],pospltxt[1],textoidl('\tau_{PEXT}'),color=0,/normal,charsize=1.3;,charthick=2.0

                         
                        ;Locating all the hidden data points (spectrum+filter)

                        match2,((*(*!dustem_data).polext).wav),((*(*!dustem_show).polext).wav),show_polsedpts,fit_polsedpts ;only show_polsedpts is needed

                        idx_rmv_polsed=where(fit_polsedpts eq -1, ct_hdnpts) ; indices of the points to hide  - not renaming this and keeping the polsed notation

                        ;Locating the hidden spectrum and filter data points                                        

                        idx_filt_hdn = where((((*(*!dustem_show).polext).filt_names))(idx_rmv_polsed) NE 'SPECTRUM',ct_filt_hdn)
                        idx_spec_hdn = where(((*(*!dustem_show).polext).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

                                cgoplot,1/(((*(*!dustem_show).polext).wav)[idx_rmv_polsed])(idx_spec_hdn),(((*(*!dustem_show).polext).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).polext).sigma)[idx_rmv_polsed])(idx_spec_hdn)/2.
                                cgerrplot,1/(((*(*!dustem_show).polext).wav)[idx_rmv_polsed])(idx_spec_hdn),(((*(*!dustem_show).polext).values)[idx_rmv_polsed])(idx_spec_hdn)-rms,(((*(*!dustem_show).polext).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 

                                cgoplot,1/(((*(*!dustem_show).polext).wav)[idx_rmv_polsed])(idx_filt_hdn),(((*(*!dustem_show).polext).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).polext).sigma)[idx_rmv_polsed])(idx_filt_hdn)/2.
                                cgerrplot,1/(((*(*!dustem_show).polext).wav)[idx_rmv_polsed])(idx_filt_hdn),(((*(*!dustem_show).polext).values)[idx_rmv_polsed])(idx_filt_hdn)-rms,(((*(*!dustem_show).polext).values)[idx_rmv_polsed])(idx_filt_hdn)+rms,color='Black'

                                
                            endif
                                                           
                        endif    
                        
                        
                    
                    endelse 
                
                
                
                endelse 
            
            endelse
        

        end
        

        'POLSED': begin 

            IF ct_m NE 0 then begin
                xr=xr_m 
                yr=yr_m
                
            ENDIF

            vectw=DINDGEN(1001)*(alog10(1E7) - alog10(1E5))/(1000 - 1L) + alog10(1E5)
            vectw=10^vectw[1:*]
            vectw=[wavs,vectw]
            vectx=vectw*0+1

            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,vectw,vectx,/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=1.3;,charthick=2.0
                  
                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=dustem_interp[idx_spec]

                            rms=3.*((*(*!dustem_data).polsed).sigma)(idx_spec)/2.

                            indzero = where(yy NE 0, ct_zero)
                            IF ct_zero NE 0 THEN BEGIN

                                cgoplot,xx[indzero],(((*(*!dustem_data).polsed).values)[idx_spec])[indzero]/yy[indzero],color='Powder Blue',psym=16,syms=0.8,noerase=1,pos=position
                                cgerrplot,(((*(*!dustem_data).polsed).wav)(idx_spec))[indzero],((((*(*!dustem_data).polsed).values)[idx_spec])[indzero]-rms[indzero])/yy[indzero],((((*(*!dustem_data).polsed).values)[idx_spec])[indzero]+rms[indzero])/yy[indzero],color='Powder Blue'

                            ENDIF

                        ENDIF

                        IF ct_filt NE 0 THEN BEGIN

                            xx=((*(*!dustem_data).polsed).wav)[idx_filt]

                            yy=dustem_interp[idx_filt]

                            rms=3.*((*(*!dustem_data).polsed).sigma)(idx_filt)/2.

                            indzero = where(yy NE 0, ct_zero)
                            IF ct_zero NE 0 THEN BEGIN 

                                cgoplot,xx[indzero],(((*(*!dustem_data).polsed).values)[idx_filt])[indzero]/yy[indzero],psym=16,color='Dodger Blue',syms=0.8,noerase=1,pos=position
                                cgerrplot,(((*(*!dustem_data).polsed).wav)(idx_filt))[indzero],((((*(*!dustem_data).polsed).values)[idx_filt])[indzero]-rms[indzero])/yy[indzero],((((*(*!dustem_data).polsed).values)[idx_filt])[indzero]+rms[indzero])/yy[indzero],color='Dodger Blue';,/overplot 

                            ENDIF

                        ENDIF
                            

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

                        xtit=textoidl('\lambda (\mum)')
                        if !run_pol then xtit = ''

                        cgplot,vectw,vectx,/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 isa((*!dustem_plugin).(0).spec) then begin
                                IF total(strsplit((*(*!dustem_plugin).(i).scope),'+',/extract) EQ 'ADD_POLSED') THEN begin
                                    cgoplot,st.polsed.wav,sqrt(((*(*!dustem_plugin).(i).spec)[*,1])^2+((*(*!dustem_plugin).(i).spec)[*,2])^2),color=clrs_plgns[i],pos=position,noerase=1,linestyle=2               
                                ENDIF 
                            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=dustem_interp[idx_spec]
                            cgoplot,xx,yy,color='Indian 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=dustem_interp[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,dustem_spec,pos=position,noerase=1,/xlog,/ys,/xs,/ylog
                        ;cgoplot,st.polsed.wav,st.polsed.em_tot*fact,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/(xr))*1E-9),charsize=1.15,title=textoidl('\nu (GHz)')

                        
                        xyouts,pospltxt[0],pospltxt[1],textoidl('P_{\nu} (MJy/sr)'),color=0,/normal,charsize=1.3;,charthick=2.0
                         
                        ;Locating all the hidden data points (spectrum+filter)

                        match2,((*(*!dustem_data).polsed).wav),((*(*!dustem_show).polsed).wav),show_polsedpts,fit_polsedpts ;only show_polsedpts is needed

                        idx_rmv_polsed=where(fit_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

                                cgoplot,(((*(*!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 

                                cgoplot,(((*(*!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 

            IF ct_m NE 0 then begin
                xr=xr_m
                yr=yr_m
                
            ENDIF

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

            
            
            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-04,50.00],/ylog,psym=8,syms=0.8  

                    xyouts,pospltxt[0],pospltxt[1],textoidl('p (%)'),color=0,/normal,charsize=1.3;,charthick=2.0

                 
            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

                        FOR i=0L,Ngrains-1 DO BEGIN

                            testneq = where(st.polsed.(i+1) ne 0,countneq)

                            if countneq ne 0 then begin 
                                vecfin = st.polsed.(i+1)*0.0
                                

                                vecfin[testneq] = ((st.polsed.(i+1))[testneq])*fact[testneq]/extra_spec[testneq];(st.sed.em_tot)[testneq];;(st.sed.em_tot)[testneq];spec[testneq];(st.sed.(i+1))[testneq];*fact;(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-04,50.00]
                            endif   

                        ENDFOR
                       
                        ;Plotting of the plugins. 

                        for i=0L,n_plgns-1 do begin

                            if isa((*!dustem_plugin).(0).spec) then begin
                            
                                IF total(strsplit((*(*!dustem_plugin).(i).scope),'+',/extract) EQ 'ADD_POLSED') THEN begin
                                    vecfin = st.polsed.em_tot*0.0
                                    vecfin[testneq] = sqrt((((*(*!dustem_plugin).(i).spec)[*,1])^2)[testneq]+(((*(*!dustem_plugin).(i).spec)[*,2])^2)[testneq])/((*(*!dustem_plugin).(i).spec)[*,0])[testneq]        
                                    cgoplot,st.polsed.wav,vecfin*100,color=clrs_plgns[i],pos=position,noerase=1,linestyle=2               
                                
                                ENDIF
                            endif

                        endfor
                       

                       ;STOPPED HERE. CHECK QSED NOW. MOVING ON NOW. 
                       

                        
                         ;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=dustem_interp[idx_spec]

                             cgoplot,xx,yy*100,color='Indian 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=dustem_interp[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,dustem_spec*100,pos=position,noerase=1,/xlog,/ys,/xs               

                                
                    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).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-04,50.00],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-04,50.00],/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-04,50.00],/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 (%)'),color=0,/normal,charsize=1.3;,charthick=2.0

                         
                        ;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),show_polfracpts,fit_polfracpts ;only show_polfracpts is needed

                        idx_rmv_polfrac=where(fit_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-04,50.00],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-04,50.00],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
        

        'FPOLEXT': BEGIN ; For completeness (not sure of the physical usefulness of this qauntity )

            IF ct_x NE 0 then begin

                xr=xr_x
                yr=yr_x
                
            ENDIF

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

            
            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-04,10.00],/ylog,psym=8,syms=0.8  
                    xyouts,pospltxt[0],pospltxt[1],textoidl('\tau_{PEXT}/\tau_{EXT} (%)'),color=0,/normal,charsize=1.3;,charthick=2.0

                 
            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
                        

                        FOR i=0L,Ngrains-1 DO BEGIN

                            vecto = transpose((st.polext.(1))[i,*]+(st.polext.(2))[i,*])
                            
                            testneq = where(vecto ne 0,countneq)

                            
                            if countneq ne 0 then begin 

                                vecfin = vecto*0.0

                                vecfin[testneq] = (vecto[testneq])*(*!dustem_HCD)/1.0e21/extra_spec[testneq];(st.sed.em_tot)[testneq];spec[testneq];(st.sed.(i+1))[testneq];*fact;(st.sed.(i+1))[testneq]

                                cgoplot,1/st.polext.wav,vecfin*100,pos=position,noerase=1,color=use_cols[i],xr=xr,/xlog,/ylog,ytickformat='(A1)',yr=[1.00E-04,10.00]

                            endif   

                        ENDFOR

                       
                        ;Plotting of the plugins. 
                         

                        for i=0L,n_plgns-1 do begin

                            
                            if isa((*!dustem_plugin).(0).spec) then begin

                            
                                IF total(strsplit((*(*!dustem_plugin).(i).scope),'+',/extract) EQ 'ADD_POLEXT') THEN begin
                                    vecfin = st.polext.ext_tot*0.0
                                    vecfin[testneq] = sqrt((((*(*!dustem_plugin).(i).spec)[*,1])^2)[testneq]+(((*(*!dustem_plugin).(i).spec)[*,2])^2)[testneq])/((*(*!dustem_plugin).(i).spec)[*,0])[testneq]        

                                    cgoplot,1/st.polext.wav,vecfin*100,color=clrs_plgns[i],pos=position,noerase=1,linestyle=2               

                                ENDIF

                            endif
                            

                        endfor

                         ;PLotting of the interpolates corresponding to spectrum and filter points
                        
                         IF ct_spec NE 0 THEN BEGIN
                         

                             xx=((*(*!dustem_data).fpolext).wav)[idx_spec]

                             yy=dustem_interp[idx_spec]

                             cgoplot,1/xx,yy*100,color='Indian Red',pos=position,psym=7,syms=2,noerase=1   

                         ENDIF
                         
                         
                         IF ct_filt NE 0 THEN BEGIN

                             xx=((*(*!dustem_data).fpolext).wav)[idx_filt]

                             yy=dustem_interp[idx_filt]

                             cgoplot,1/xx,yy*100,color='red',pos=position,psym=6,syms=2,noerase=1

                         ENDIF
                         
                         
                         ;Plotting of the total dust emission spectrum

                         cgoplot,1/st.polext.wav,dustem_spec*100,pos=position,noerase=1,/xlog,/ys,/xs

                                
                    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,1/((*(*!dustem_data).fpolext).wav)(idx_spec),((*(*!dustem_data).fpolext).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-04,10.00],psym=16,syms=0.8;,ytickformat='dstmwrp_exp'                

                            
                            ;Plotting of the spectrum error points

                            rms=3.*((*(*!dustem_data).fpolext).sigma)(idx_spec)/2.
                            cgerrplot,1/((*(*!dustem_data).fpolext).wav)(idx_spec),(((*(*!dustem_data).fpolext).values)(idx_spec)-rms)*100,(((*(*!dustem_data).fpolext).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,1/((*(*!dustem_data).fpolext).wav)(idx_filt),((*(*!dustem_data).fpolext).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-04,10.00],/xlog,/ylog else $;,ytickformat='dstmwrp_exp'
                                cgplot,1/((*(*!dustem_data).fpolext).wav)(idx_filt),((*(*!dustem_data).fpolext).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-04,10.00],/xlog,/ylog;,ytickformat='dstmwrp_exp'

                            
                            
                            ;Plotting of the filter error points

                            rms=3.*((*(*!dustem_data).fpolext).sigma)(idx_filt)/2.;/dustem_polfrac(idx_filt)
                            cgerrplot,1/((*(*!dustem_data).fpolext).wav)(idx_filt),(((*(*!dustem_data).fpolext).values)(idx_filt)-rms)*100,(((*(*!dustem_data).fpolext).values)(idx_filt)+rms)*100,color='Dodger Blue'

                            
                        endif
                        
                        
                        

                        xyouts,pospltxt[0],pospltxt[1],textoidl('\tau_{PEXT}/\tau_{EXT} (%)'),color=0,/normal,charsize=1.3;,charthick=2.0

                         
                        ;Locating all the hidden data points (spectrum+filter)
                        
                        ;The filtering has been done prior (in the primary routine)

                        match2,((*(*!dustem_data).fpolext).wav),((*(*!dustem_show).fpolext).wav),show_polfracpts,fit_polfracpts ;only show_polfracpts is needed

                        idx_rmv_polfrac=where(fit_polfracpts eq -1, ct_hdnpts) ; indices of the points to hide; 

                        ;Locating the hidden spectrum and filter data points                                        

                        idx_filt_hdn = where(((*(*!dustem_show).fpolext).filt_names)(idx_rmv_polfrac) NE 'SPECTRUM',ct_filt_hdn)
                        idx_spec_hdn = where(((*(*!dustem_show).fpolext).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,1/(((*(*!dustem_show).fpolext).wav)[idx_rmv_polfrac])(idx_spec_hdn),(((*(*!dustem_show).fpolext).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-04,10.00],psym=8,syms=0.8

                                
                                ;Plotting of hidden spectrum error points

                                rms=3.*(((*(*!dustem_show).fpolext).sigma)[idx_rmv_polfrac])(idx_spec_hdn)/2.
                                cgerrplot,1/(((*(*!dustem_show).fpolext).wav)[idx_rmv_polfrac])(idx_spec_hdn),((((*(*!dustem_show).fpolext).values)[idx_rmv_polfrac])(idx_spec_hdn)-rms)*100,((((*(*!dustem_show).fpolext).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,1/(((*(*!dustem_show).fpolext).wav)[idx_rmv_polfrac])(idx_filt_hdn),(((*(*!dustem_show).fpolext).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-04,10.00],psym=8,syms=0.8                                           

                                ;stop
                                ;Plotting of hidden filter error point

                                rms=3.*(((*(*!dustem_show).fpolext).sigma)[idx_rmv_polfrac])(idx_filt_hdn)/2.
                                cgerrplot,1/(((*(*!dustem_show).fpolext).wav)[idx_rmv_polfrac])(idx_filt_hdn),((((*(*!dustem_show).fpolext).values)[idx_rmv_polfrac])(idx_filt_hdn)-rms)*100,((((*(*!dustem_show).fpolext).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
            

            IF ct_m NE 0 then begin

                xr=xr_m 
                yr=yr_m
                
            ENDIF

            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 (deg)'),color=0,/normal,charsize=1.3;,charthick=2.0

                 
            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
                        

                        
                        ;Plotting of the spectra of the dust species
                        FOR i=0L,Ngrains-1 DO BEGIN
                            testneq = where(st.polsed.(i+1) ne 0,countneq)
                            if countneq ne 0 then begin
                                vecfin = st.polsed.(i+1)*0.0
                            

                                vecfin[testneq] = ((st.polsed.(i+1))[testneq])/(st.sed.(i+1))[testneq];extra_spec[testneq];(st.sed.em_tot)[testneq];spec[testneq] ;removed multiplication by 'fact'. 

                                ;*****NB: These two lines will have to be modified if the polarization angle varies with the dust species and/or with wavelength
                                polar_ippsi2iqu,st.sed.(i+1)*fact,specqgrain,specugrain,vecfin,replicate(!dustem_psi,n_elements(vecfin)) ;temporary solution

                                
                                ;You can replace the -0 values by 0 in order to avoid atan giving wrong values 
                                testnzero = where(specqgrain EQ -0., ct_nzero)
                                if ct_nzero ne 0 then specqgrain[testnzero] = 0
                                
                                cgoplot,st.polsed.wav,0.5*atan(specugrain, specqgrain)/!dtor,pos=position,noerase=1,color=use_cols[i],xr=xr,/xlog,ytickformat='(A1)',yr=[-90.00,90.00]
                                ;cgoplot,st.polsed.wav,replicate(!dustem_psi,n_elements(vecfin)),pos=position,noerase=1,color=use_cols[i],xr=xr,/xlog,ytickformat='(A1)',yr=[-90.00,90.00]

                            endif 
                        ENDFOR

                        ;Plotting of the plugins.
                        for i=0L,n_plgns-1 do begin
                            
                            if isa((*!dustem_plugin).(0).spec) then begin
                                IF total(strsplit((*(*!dustem_plugin).(i).scope),'+',/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,st.polsed.wav,0.5*atan((*(*!dustem_plugin).(i).spec)[*,2],(*(*!dustem_plugin).(i).spec)[*,1])/degtorad,pos=position,noerase=1, color=clrs_plgns[i], linestyle=2 ,xr=xr,/xlog,ytickformat='(A1)',yr=[-90.00,90.00]   

                                ENDIF
                            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=dustem_interp[idx_spec]
                             cgoplot,xx,yy,color='Indian 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=dustem_interp[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
                         cgoplot,st.sed.wav,dustem_spec,pos=position,noerase=1,/xlog,/ys,/xs               

                    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).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 (deg)'),color=0,/normal,charsize=1.3;,charthick=2.0

                         
                        ;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),show_psi_empts,fit_psi_empts ;only show_psi_empts is needed

                        idx_rmv_psi_em=where(fit_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 

                    
                    endelse 

            endelse 

           
           
        end
        
        'PSI_EXT': begin ;MODIFYING THIS NOW - You should write a plugin for the modification of polarized extinction so that !dustem_psi_ext is different than !dustem_psi. 

            IF ct_x NE 0 then begin
                xr=xr_x 
                yr=yr_x
            ENDIF

            idx_filt=where((*(*!dustem_data).psi_ext).filt_names NE 'SPECTRUM',ct_filt)
            idx_spec=where((*(*!dustem_data).psi_ext).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_{EXT} (deg)'),color=0,/normal,charsize=1.3;,charthick=2.0

                 
            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

                            vecto = transpose((st.polext.(1))[i,*]+(st.polext.(2))[i,*])
                            vecte = transpose(((st.ext.(1))[i,*]+(st.ext.(2))[i,*]))
                            testneq = where(vecto ne 0,countneq)

                            
                            ;testing whether the polext values contain negative ones
                            testpos = where(vecto LT 0, countpos)
                            IF countpos NE 0 THEN vecto[testpos] = 0

                            if countneq ne 0 then begin

                                vecfin = vecto*0.0

                                vecfin[testneq] = (vecto[testneq])/vecte[testneq];extra_spec[testneq];(st.sed.em_tot)[testneq];spec[testneq] ;removed multiplication by 'fact'. 

                                polar_ippsi2iqu,vecte*(*!dustem_HCD)/1.0e21,specqgrain,specugrain,vecfin,replicate(!dustem_psi_ext,n_elements(vecfin)) ;temporary solution
                                 

                                cgoplot,1/st.polext.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]

                            endif 
                        ENDFOR

                        ;Plotting of the plugins.
                        for i=0L,n_plgns-1 do begin
                            
                            if isa((*!dustem_plugin).(0).spec) then begin
                                IF total(strsplit((*(*!dustem_plugin).(i).scope),'+',/extract) EQ 'ADD_POLEXT') 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,1/st.polext.wav,0.5*atan((*(*!dustem_plugin).(i).spec)[*,2],(*(*!dustem_plugin).(i).spec)[*,1])/degtorad,pos=position,noerase=1, color=clrs_plgns[i], linestyle=2 ,xr=xr,/xlog,ytickformat='(A1)',yr=[-90.00,90.00]   

                                ENDIF
                            ENDIF
                        endfor
                        
                         ;PLotting of the interpolates corresponding to spectrum and filter points
                        
                         IF ct_spec NE 0 THEN BEGIN
                         

                             xx=((*(*!dustem_data).psi_ext).wav)[idx_spec]

                             yy=dustem_interp[idx_spec]

                             cgoplot,1/xx,yy,color='Indian Red',pos=position,psym=7,syms=2,noerase=1   

                         ENDIF
                         
                         
                         IF ct_filt NE 0 THEN BEGIN

                             xx=((*(*!dustem_data).psi_ext).wav)[idx_filt]

                             yy=dustem_interp[idx_filt]

                             cgoplot,1/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

                         cgoplot,1/st.ext.wav,dustem_spec,pos=position,noerase=1,/xlog,/ys,/xs               

                                
                    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,1/((*(*!dustem_data).psi_ext).wav)(idx_spec),((*(*!dustem_data).psi_ext).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_ext).sigma)(idx_spec)/2.
                            cgerrplot,1/((*(*!dustem_data).psi_ext).wav)(idx_spec),((*(*!dustem_data).psi_ext).values)(idx_spec)-rms,((*(*!dustem_data).psi_ext).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,1/((*(*!dustem_data).psi_ext).wav)(idx_filt),((*(*!dustem_data).psi_ext).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,1/((*(*!dustem_data).psi_ext).wav)(idx_filt),((*(*!dustem_data).psi_ext).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_ext).sigma)(idx_filt)/2.;/dustem_psi_em(idx_filt)
                            cgerrplot,1/((*(*!dustem_data).psi_ext).wav)(idx_filt),((*(*!dustem_data).psi_ext).values)(idx_filt)-rms,((*(*!dustem_data).psi_ext).values)(idx_filt)+rms,color='Dodger Blue'

                            
                        endif
                        
                        
                        

                        xyouts,pospltxt[0],pospltxt[1],textoidl('\Psi_{EXT} (deg)'),color=0,/normal,charsize=1.3;,charthick=2.0

                         
                        ;Locating all the hidden data points (spectrum+filter)
                        
                        ;The filtering has been done prior (in the primary routine)

                        match2,((*(*!dustem_data).psi_ext).wav),((*(*!dustem_show).psi_ext).wav),show_psi_empts,fit_psi_empts ;only show_psi_empts is needed

                        idx_rmv_psi_em=where(fit_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_ext).filt_names)(idx_rmv_psi_em) NE 'SPECTRUM',ct_filt_hdn) ;keeping psi_em notation for counters...
                        idx_spec_hdn = where(((*(*!dustem_show).psi_ext).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,1/(((*(*!dustem_show).psi_ext).wav)[idx_rmv_psi_em])(idx_spec_hdn),(((*(*!dustem_show).psi_ext).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_ext).sigma)[idx_rmv_psi_em])(idx_spec_hdn)/2.
                                cgerrplot,1/(((*(*!dustem_show).psi_ext).wav)[idx_rmv_psi_em])(idx_spec_hdn),(((*(*!dustem_show).psi_ext).values)[idx_rmv_psi_em])(idx_spec_hdn)-rms,(((*(*!dustem_show).psi_ext).values)[idx_rmv_psi_em])(idx_spec_hdn)+rms,color='Black'