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Sgitopnm User Manual(0) 						  Sgitopnm User Manual(0)

       sgitopnm - convert a SGI image file to PNM



       [-channel c]


       This program is part of Netpbm(1)

       sgitopnm  reads an SGI image file as input and 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, the program produces a PGM image of any one of the channels  in  the  input

	      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(1) , pnmtosgi(1)

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

netpbm documentation			   29 Jul 2000			  Sgitopnm User Manual(0)
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