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pgmtops(1) PBM Plus pgmtops(1)
NAME
pgmtops - convert a portable graymap into Encapsulated
PostScript
SYNOPSIS
pgmtops [-rle] [-scale <x>] [<pgmfile>]
DESCRIPTION
Reads a portable graymap as input. Produces Encapsulated
PostScript as output.
The -scale flag controls the scale of the result. The
default scale is 1, which results in one pgm pixel producing
a 3x3 square of PostScript pixels. On a 300 dpi printer
such as the Apple LaserWriter, this makes the output look
about the same size as the input would if it was displayed
on a typical 72 dpi screen. To get one pgm pixel per Laser-
Writer pixel, use "-s 0.333333".
The -rle flag specifies run-length compression. This may
save time if the host-to-printer link is slow; but normally
the printer's processing time dominates, so -rle makes
things slower.
All flags can be abbreviated to their shortest unique pre-
fix.
Note that there is no pstopgm tool - this transformation is
one-way, because a pstopgm tool would be a full-fledged
PostScript interpreter, which is beyond the scope of this
package. However, see the psidtopgm tool.
SEE ALSO
psidtopgm(1), pgm(5), ppmtops(1) One NeXT user reported
that, while the EPS image did load, it also locked up his
machine.
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 docu-
mentation. This software is provided "as is" without
express or implied warranty.
Printed 5/25/90 04 March 1989 1