phpman > man > sgitopnm(1)

Che Dong

Convert an SGI file to a PNM file.

Convert an SGI image to a PNM file
sgitopnm {{path/to/input.sgi}} > {{path/to/output.pnm}}
Display information about the SGI file
sgitopnm {{-verb|-verbose}} {{path/to/input.sgi}} > {{path/to/output.pnm}}
Extract channel n of the SGI file
sgitopnm {{-c|-channel}} {{n}} {{path/to/input.sgi}} > {{path/to/output.pnm}}

sgitopnm(1)                            General Commands Manual                           sgitopnm(1)



NAME
       sgitopnm - convert a SGI image file to a portable anymap

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

DESCRIPTION
       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.


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 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.


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


SEE ALSO
       pnm(5), pnmtosgi(1)


AUTHOR
       Copyright (C) 1994 by Ingo Wilken (Ingo.Wilken AT informatik.de)




                                             29 Jul 2000                                 sgitopnm(1)

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