dustem_read_dustem_lv.pro.~1.1.~
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FUNCTION dustem_read_dustem_lv,file,silent=silent
;=== determine the number of grains
str=' '
OPENR,unit,file,/get_lun
;==read comments
str='' & first_char='#'
WHILE first_char EQ '#' DO BEGIN
readf,unit,str
first_char=strmid(str,0,1)
ENDWHILE
;readf,unit,str
CLOSE,unit
free_lun,unit
str=strcompress(str)
str=strtrim(str,2)
vv=str_sep(str,' ')
Ngrains=vv(0)
;Ngrains=!dustem_params.Ngrains
;Read model output
instruc='readcol,file,wav,'
FOR i=0L,Ngrains-1 DO BEGIN
instruc=instruc+'em_grain_'+strtrim(i+1,2)+','
ENDFOR
instruc=instruc+'em_tot,silent=silent'
toto=execute(instruc)
;readcol,wav,em_pah,em_vsg,em_bg,em_tot,silent=silent
nlines=n_elements(wav)-1
;one_st={wav:0.,em_pah:0.,em_vsg:0.,em_bg:0.,em_tot:0.}
instruc='one_st={wav:0.,'
FOR i=0L,Ngrains-1 DO BEGIN
instruc=instruc+'em_grain_'+strtrim(i+1,2)+':0.,'
ENDFOR
instruc=instruc+'em_tot:0.}'
toto=execute(instruc)
;stop
st=replicate(one_st,Nlines)
st.wav=wav(1:*)
FOR i=0L,Ngrains-1 DO BEGIN
instruc='st.(i+1)='+'em_grain_'+strtrim(i+1,2)+'(1:*)'
toto=execute(instruc)
ENDFOR
st.em_tot=em_tot(1:*)
return,st
END