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



NAME
       sgitopnm - convert a SGI image file to PNM


SYNOPSIS
       sgitopnm

       [-verbose]

       [-channel c]

       [SGIfile]


DESCRIPTION
       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 file.


OPTIONS
       -verbose
              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 chan-
              nels  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.




REFERENCES
       SGI Image File Format documentation (draft v0.95) by  Paul  Haeberli  (paulATsgi.com).   Available  via  ftp  at
       sgi.com:graphics/SGIIMAGESPEC.


SEE ALSO
       pnm(1), pnmtosgi(1)


AUTHOR
       Copyright (C) 1994 by Ingo Wilken (Ingo.WilkenATinformatik.de)



netpbm documentation              29 Jul 2000          Sgitopnm User Manual(0)