dustem_read_ext_lv.pro
2.55 KB
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FUNCTION dustem_read_ext_lv,file,silent=silent,help=help
;+
; NAME:
; dustem_read_ext_lv
;
; PURPOSE:
; reads information relating to the extinction from each grain type
; from the corresponding .DAT file
;
; CATEGORY:
; DustEMWrap, Distributed, LowLevel, Initialization
;
; CALLING SEQUENCE:
; st=dustem_read_ext_lv(file)
;
; INPUTS:
; file : output file to be read
;
; OPTIONAL INPUT PARAMETERS:
; None
;
; OUTPUTS:
; st : dustem data structure
;
; OPTIONAL OUTPUT PARAMETERS:
; None
;
; ACCEPTED KEY-WORDS:
; help : writes this help
;
; COMMON BLOCKS:
; None
;
; SIDE EFFECTS:
;
; RESTRICTIONS:
; The DustEM fortran code must be installed
; The DustEMWrap IDL code must be installed
;
; PROCEDURES AND SUBROUTINES USED:
;
; EXAMPLES:
;
; MODIFICATION HISTORY:
; Evolution details on the DustEMWrap gitlab.
; See http://dustemwrap.irap.omp.eu/ for FAQ and help.
;-
IF keyword_set(help) THEN BEGIN
doc_library,'dustem_read_ext_lv'
st=0.
goto,the_end
ENDIF
;=== 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)
;Read model output
instruc='readcol,file,wav,'
FOR i=0L,Ngrains-1 DO BEGIN
instruc=instruc+'abs_grain_'+strtrim(i+1,2)+','
ENDFOR
FOR i=0L,Ngrains-1 DO BEGIN
instruc=instruc+'sca_grain_'+strtrim(i+1,2)+','
ENDFOR
;VG read ext_tot from the file
instruc=instruc+'ext_tot,silent=silent'
toto=execute(instruc)
;stop
;Nlines=n_elements(wav)-1
Nlines=n_elements(wav)
one_st = {wav:0., abs_grain:replicate(0.,Ngrains), sca_grain:replicate(0.,Ngrains),ext_tot:0.}
st=replicate(one_st,Nlines)
;VG : EXT.RES now contains the total absorption & scattering cross-sections per grain type in cm2/H
; no need for GRAIN.DAT to plot extinction anymore
;mH=1.66e-24
;fact=mH*1.e21
;st.wav=wav(1:*)
st.wav=wav
FOR iwav=0L,Nlines-1 DO BEGIN
FOR igrain=0L,Ngrains-1 DO BEGIN
instruc = 'st(iwav).abs_grain(igrain) = abs_grain_'+strtrim(igrain+1,2)+'(iwav)'
toto = execute(instruc)
instruc = 'st(iwav).sca_grain(igrain) = sca_grain_'+strtrim(igrain+1,2)+'(iwav)'
toto = execute(instruc)
;st(iwav).ext_tot = st(iwav).ext_tot + fact * (st(iwav).abs_grain(igrain) + st(iwav).sca_grain(igrain))
instruc = 'st(iwav).ext_tot = ext_tot(iwav)'
toto = execute(instruc)
ENDFOR
ENDFOR
the_end:
return,st
END