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psidtopgm(1)					 psidtopgm(1)

NAME
       psidtopgm   -  convert  PostScript  "image"  data  into	a
       portable graymap

SYNOPSIS
       psidtopgm width height bits/sample [imagedata]

DESCRIPTION
       Reads the "image" data from a PostScript file  as  input.
       Produces a portable graymap as output.

       This  is a  very	 simple and limited program, and is here
       only because so many people have asked for it.  To use  it
       you  have  to manually extract the readhexstring data por-
       tion from your PostScript file, and then give  the  width,
       height,	and  bits/sample on the command line.  Before you
       attempt this, you should at least read the description  of
       the  "image" operator in the PostScript Language Reference
       Manual.

       It would probably not be too hard to write a  script  that
       uses  this filter to read a specific variety of PostScript
       image, but the variation is too great to make  a general-
       purpose	reader. Unless,	 of course, you want to write a
       full-fledged PostScript interpreter...

SEE ALSO
       pnmtops(1), pgm(5)

AUTHOR
       Copyright (C) 1989 by Jef Poskanzer.

			   02 August 89				1

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