FUNCTION dustem_compute_polsed,p_dim,stp,_extra=extra,out_st=out_st

;+
; NAME:
;    dustem_compute_polsed
; PURPOSE:
;    Computes an SED from a given Dustem spectrum
; CATEGORY:
;    Dustem
; CALLING SEQUENCE:
;    sed=dustem_compute_polsed(p_dim[,st=][,_extra=][,/help])
; INPUTS:
;    p_dim      = parameter values
; OPTIONAL INPUT PARAMETERS:
;    None
; OUTPUTS:
;    sed       = computed SED for filters in !dustem_data
; OPTIONAL OUTPUT PARAMETERS:
;    st        = Dustem output structure
; ACCEPTED KEY-WORDS:
;    help      = If set, print this help
; COMMON BLOCKS:
;    None
; SIDE EFFECTS:
;    None
; RESTRICTIONS:
;    The dustem idl wrapper must be installed
; PROCEDURE:
;    None
; EXAMPLES
;    
; MODIFICATION HISTORY:
;    Written by J.-Ph. Bernard
;    see evolution details on the dustem cvs maintained at CESR
;    Contact J.-Ph. Bernard (Jean-Philippe.Bernard@cesr.fr) in case of problems.
;-

IF keyword_set(help) THEN BEGIN
  doc_library,'dustem_compute_polsed'
  dustem_polsed=0.
  goto,the_end
ENDIF

IF not keyword_set(stp) THEN BEGIN
  ;st=dustem_run(p_dim)
  dustem_create_functions,p_dim/(*(*!dustem_fit).param_init_values),res=res
  st=dustem_run(p_dim)
ENDIF
If keyword_set(result) THEN result=st
fact = 1.e4*1.E20/(4.*!pi)/(3.e8/1.e-6/stp.wav)*1.e20/1.e7
spec = stp.em_tot * fact
;stop
if not isarray(spec) THEN stop 
;stop
;COMPUTE THE MODEL SED

dustem_polsed = (*!dustem_data.polsed).values * 0.

;stop
IF !dustem_do_cc NE 0 AND !dustem_never_do_cc EQ 0 THEN BEGIN
  message,'DOING color correction calculations',/info
ENDIF ELSE BEGIN
  message,'SKIPPING color correction calculations',/info
ENDELSE

ind_polsed=where((*!dustem_data.polsed).filt_names NE 'SPECTRUM',count_polsed)

IF count_polsed NE 0 THEN BEGIN
  filter_names=((*!dustem_data.polsed).filt_names)(ind_polsed)
  ;FOR ii=0L,n_elements(filter_names)-1 DO BEGIN
    spolsed=dustem_cc(stp.wav,spec,filter_names,cc=cc)
  ;ENDFOR
  dustem_polsed(ind_polsed)=spolsed
ENDIF

;For spectrum data points, interpolate in log-log
;Linear interpolation leads to wrong values, in particular where few
;wavelengths points exist in the model (long wavelengths).
ind_spec=where((*!dustem_data.polsed).filt_names EQ 'SPECTRUM',count_spec)
IF count_spec NE 0 THEN BEGIN
  dustem_polsed(ind_spec)=interpol(spec,stp.wav,(((*!dustem_data.polsed).wav)(ind_spec)))
ENDIF
out_st=stp

;clean pointers
heap_gc

the_end:

RETURN,dustem_polsed

END