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sgitopnm(1)									      sgitopnm(1)

       sgitopnm - convert a SGI image file to a portable anymap

       sgitopnm [-verbose] [-channel c] [SGIfile]

       Reads  an  SGI  image file as input.  Produces a PGM image for a 2-dimensional (1 channel)
       input file, and a PPM image for a 3-dimensional (3 or more channels) input file.

       Alternatively, produces a PGM image of any one of the channels in the input file.

	      Give some information about the SGI image file.

       -channel c
	      Extract channel c of the image as a  PGM	image.	 Without  this	option,  sgitopnm
	      extracts	the  first 3 channels as a PPM image or, if the input has only 1 channel,
	      extracts that as a PGM image, and if the input has 2 channels, fails.

       SGI Image File Format documentation (draft v0.95) by Paul Haeberli (paul@sgi.com).  Avail-
       able via ftp at sgi.com:graphics/SGIIMAGESPEC.

       pnm(5), pnmtosgi(1)

       Copyright (C) 1994 by Ingo Wilken (Ingo.Wilken@informatik.uni-oldenburg.de)

					   29 Jul 2000				      sgitopnm(1)
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