Linux Commands Examples

A great documentation place for Linux commands


convert a SGI image file to a portable anymap

see also : pnmtosgi


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

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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[:at:]sgi[:dot:]com). Available via ftp at

see also

pnm, pnmtosgi


Copyright (C) 1994 by Ingo Wilken (Ingo.Wilken[:at:]informatik[:dot:]

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