Extended IDL Help

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Last modified: Tue Jan 18 02:08:43 2000.


List of Routines


Routine Descriptions

LOCATE_ISSA

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 NAME:
      locate_issa
 PURPOSE:
      locate the nearest ISSA image from input ra, dec
 CATEGORY:
      ISSA
 CALLING SEQUENCE:
      files=locate_issa(ra,dec[,band=band][,closest=])
 INPUTS:
      ra,dec : ra,dec to be searched for (degrees)
 OPTIONAL INPUTS:
      Band   = IRAS band for which the filenames have to be
               returned (1=12 mic to 4=100 mic)
      closest= number of files to be returned
               (in order of increasing distance from ra,dec
      xcat_file = .xcat ascii file containing the ISSA data hierarchy. Must be in !jpblib_issa_dir
 OUTPUTS:
      files  = list of filenames
 OPTIONAL OUTPUTS:
      None
 COMMON BLOCKS:
      None
 SIDE EFFECTS:
      Uses an Xcatscan-like file in !jpblib_issa_dir
 RESTRICTIONS:
      Must have read permission
 PROCEDURE:
      Uses read_xcat.pro
           gcirc.pro
 EXAMPLE:
      ra=ten(16.,24,0)/24.*360. & dec=ten(-10.,0.,0.)
      file=locate_issa(ra,dec,band=4,closest=2)
      d=readfits(file(0),h)
      image_cont20,d,h,/square
 MODIFICATION HISTORY:
      Created Oct 30 1997 by J.Ph. Bernard IAS
      Modified June 2 1998 for MacOS JPB
      Modified June 30 1999 to include keyword xcat_file
                            and allow arrays of ra and dec.

(See MacintoshHD:IDL Libraries:JPBlib:ISSA:locate_issa.pro)


MAKE_ISSA_CAT

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 NAME:
      make_issa_cat
 PURPOSE:
      Generates a catalog of positions for all ISSA plates
      to be used by locate_issa.pro
 CATEGORY:
      ISSA
 CALLING SEQUENCE:
      make_issa_cat[,/cd]
 INPUTS:
      None
 OPTIONAL INPUTS:
      cd = name for a CD where to look for ISSA files
 filename= name of the .xcat file to be created
 KEYWORD PARAMETERS:
      None
 OUTPUTS:
      None
 OPTIONAL OUTPUTS:
      None
 COMMON BLOCKS:
      None
 SIDE EFFECTS:
      Generates an Xcatscan-like file in !jpblib_issa_dir
 RESTRICTIONS:
      Must have write permission
 PROCEDURE:
      Uses write_xcat.pro
 EXAMPLE:
 MODIFICATION HISTORY:
      Created Oct 30 1997 by J.Ph. Bernard IAS
      June 2 1998, Modified for MacOS by JPB
      July 17 1998, Modified JPB to include cd keyword

(See MacintoshHD:IDL Libraries:JPBlib:ISSA:make_issa_cat.pro)


MOSAIQUE_ISSA

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 NAME:
      mosaique_issa
 PURPOSE:
      creates a mosaic of ISSA images
 CATEGORY:
      ISSA
 CALLING SEQUENCE:
      im=mosaique_issa(hh,band[,weight=][,/show])
 INPUTS:
      hh : header on which projection has to be done
      band = IRAS band for which the filenames have to be
               returned (1=12 mic to 4=100 mic)
 OPTIONAL INPUTS:
      show = show intermediate images, if set.
 OUTPUTS:
      im  = image corresponding to h
 OPTIONAL OUTPUTS:
      weight = weight map for im
 COMMON BLOCKS:
      None
 SIDE EFFECTS:
      None
 RESTRICTIONS:
      None
 PROCEDURE:
      Uses locate_issa and mosaique3 recursively until all
           the image area has been covered.
      Uses locate_issa.pro, mosaique3.pro, create_coo2.pro, index2ij.pro
 EXAMPLE:
      ra=ten(16.,24,0)/24.*360. & dec=ten(-20.,0.,0.)
      file=locate_issa(ra,dec,band=4,closest=2)
      d=readfits(file(0),h)
      sxaddpar,h,'CDELT1',sxpar(h,'CDELT1')*2.
      sxaddpar,h,'CDELT2',sxpar(h,'CDELT2')*2.
      window,0,xs=500,ys=500 & loadct,13
      im=mosaique_issa(h,4,weight=w,/show)
      image_cont20,im,h,/square,imrange=[-100,300]
 MODIFICATION HISTORY:
      Created Oct 30 1997 by J.Ph. Bernard IAS
      Modified June 2 1998 for MacOS JPB

(See MacintoshHD:IDL Libraries:JPBlib:ISSA:mosaique_issa.pro)