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From: ekberg@asl.dl.nec.COM (Tom Ekberg)
Newsgroups: comp.windows.x
Subject: Re: Help re-sizing an image........
 > problem:  I would like to take an arbitrary portion of the 1024 bytes,
 > 	and expand them over the entire window.  That is, I want to be able
 > 	to blow up a region on the screen.  The problem is that if I must 
 >
Message-ID: <9103111957.AA08191@aslss01.asl.dl.nec.com>
Date: 11 Mar 91 19:57:48 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 8

It sounds to me like you want to do something like xmag.  I use it often to
blow up a region of the screen to see what the pixels are.  You probably will
need to hack it up to get it to work directly with your application.

If you want to interpolate then xmag will not be of much use -- it performs
pixel magnification.

  -- tom, ekberg@asl.dl.nec.com (x3503)