Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!chinacat!woody
From: woody@chinacat.Unicom.COM (Woody Baker @ Eagle Signal)
Newsgroups: comp.lang.postscript
Subject: Re: Negative needed
Summary: look for setgray
Message-ID: <1947@chinacat.Unicom.COM>
Date: 15 Apr 91 05:03:10 GMT
References: <1991Apr11.124626.12325@pbs.org>
Organization: a guest of Unicom Systems Development, Austin
Lines: 14

In article <1991Apr11.124626.12325@pbs.org>, rfutscher@pbs.org writes:
> If I plot to a postscript file is there a way to edit the 
> postscript file so that the drawing is printed as a negitive?
> 
Look through the file for the word setray.  It may be used in
a procedure definition to make the file more compact.  IF it is, then
examine it carefuly, and see what the incoming parameter is.  You can then
modify the definition to complement the incoming paramater.

Alternatly, you could search for every occurance of setgray or the
re-defintion of it, and alter the parameter.

Cheers'
Woody