NAME

ppmscale - scale a portable pixmap

SYNOPSIS

ppmscale <s> [ppmfile]
ppmscale -xsize|-width|-ysize|-height <s> [ppmfile]
ppmscale -xscale|-yscale <s> [ppmfile]
ppmscale -xscale|-xsize|-width <s> -yscale|-ysize|-height <s> [ppmfile]

DESCRIPTION

Reads a portable pixmap as input.  Scales it by the specified factor or factors and produces a portable pixmap as output.  You can both enlarge (scale factor > 1) and reduce (scale factor < 1).  You can specify one dimension as a pixel size, and the other dimension will be scaled correspondingly.  You can specify one dimension as a scale, and the other dimension will not be scaled.  Or, you can specify different scales for each axis, either as scale factors or as pixel sizes. 

All flags can be abbreviated to their shortest unique prefix. 

SEE ALSO

pbmreduce(1), pnmenlarge(1), ppm(5)

AUTHOR

Copyright (C) 1989 by Jef Poskanzer. 
 
Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation.  This software is provided "as is" without express or implied warranty.

Amiga Unix  —  Last change: 01 August 1989