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psidtopgm - convert PostScript "image" data into a portable graymap
psidtopgm width height bits/sample [imagedata]
Reads the "image" data from a PostScript file as input. Produces a portable graymap as
This program is obsoleted by pstopnm. What follows was written before pstopnm existed.
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 portion 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 spe-
cific variety of PostScript image, but the variation is too great to make a general-pur-
pose reader. Unless, of course, you want to write a full-fledged PostScript inter-
Copyright (C) 1989 by Jef Poskanzer.
02 August 89 psidtopgm(1)
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