dustem_read_qabs_lv.pro
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FUNCTION dustem_read_qabs_lv,file,silent=silent,read_densities=read_densities
;+
; NAME:
; dustem_read_qabs_lv
;
; PURPOSE:
; reads information relating to the grain QABS
; from the corresponding .DAT file for the LV fortran version
;
; CATEGORY:
; DustEMWrap, Distributed, LowLevel, Initialization
;
; CALLING SEQUENCE:
; st=dustem_read_qabs_lv(file)
;
; INPUTS:
; file : input file to be read
;
; OPTIONAL INPUT PARAMETERS:
;
; OUTPUTS:
; st : dustem data structure
;
; OPTIONAL OUTPUT PARAMETERS:
;
; ACCEPTED KEY-WORDS:
; read_densities : if grain densities are size-dependent they should be
; read here
; 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_qabs_lv'
full_st=0.
goto,the_end
ENDIF
st=''
Nmax=10000L ; we assume that there are less than this many lines in the file
sts=strarr(Nmax)
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
;read number of sizes
Nsizes=fix(str)
;Get sizes
readf,unit,str
sizes=float(str_sep(strcompress(strtrim(str,2)),' '))
Ncol=Nsizes
; test read the next line to see if it contains densities
readf,unit,str
first_char=strmid(str,0,1)
IF first_char ne '#' THEN BEGIN
densities=float(str_sep(strcompress(strtrim(str,2)),' '))
ENDIF ELSE BEGIN
densities=fltarr(Nsizes)+la_undef()
ENDELSE
;==read comments
str='' & first_char='#'
WHILE first_char EQ '#' DO BEGIN
readf,unit,str
first_char=strmid(str,0,1)
ENDWHILE
;== read Qabs
sts[0]=str
nlines=1L
first_char=' '
WHILE first_char NE '#' DO BEGIN
readf,unit,st
sts[nlines]=st
nlines=nlines+1
first_char=strmid(st,0,1)
ENDWHILE
qabs_str=sts[0:nlines-2]
;stop
;==read comments
str='' & first_char='#'
WHILE first_char EQ '#' DO BEGIN
readf,unit,str
first_char=strmid(str,0,1)
ENDWHILE
;== read Qsca
sts[*]=''
sts[0]=str
nlines=1L
first_char=' '
WHILE not eof(unit) and first_char NE '#' DO BEGIN
readf,unit,st
sts[nlines]=st
nlines=nlines+1
first_char=strmid(st,0,1)
ENDWHILE
close,unit
free_lun,unit
qsca_str=sts[0:nlines-1]
Nlines=n_elements(qsca_str); -- ORIGINAL
;Nlines=n_elements(qabs_str)
qabs_values=fltarr(Nlines,Ncol)
qsca_values=fltarr(Nlines,Ncol)
FOR i=0L,Nlines-2 DO BEGIN
qabs_values[i,*]=str_sep(strcompress(strtrim(qabs_str[i],2)),' ')
qsca_values[i,*]=str_sep(strcompress(strtrim(qsca_str[i],2)),' ')
ENDFOR
;== Make output structure
cmd='one_st={'
FOR i=0L,Ncol-1 DO BEGIN
cmd=cmd+'v'+strtrim(i+1,2)+':'+'0.'
IF i NE Ncol-1 THEN BEGIN
cmd=cmd+','
ENDIF ELSE BEGIN
cmd=cmd+'}'
ENDELSE
ENDFOR
toto=execute(cmd)
qabs_st=replicate(one_st,Nlines)
qsca_st=replicate(one_st,Nlines)
;=== fill in the qabs structure
FOR j=0L,Ncol-1 DO BEGIN
qabs_st.(j)=reform(qabs_values(*,j))
qsca_st.(j)=reform(qsca_values(*,j))
ENDFOR
;stop
full_st={file:file,Nsizes:Nsizes,sizes:sizes,densities:densities,Qabs:qabs_st,Qsca:qsca_st}
the_end:
return,full_st
END