The "output 8bit ps" module takes as input a scalar (byte, single
channel) field
and creates a postscript file suitable for printing on a monochrom
postscript printer. The postscript file contains a representation
of the input color image using the "image" postscript command,
using 8bits of gray.
The postscript image is scaled so as to be centered on the page
and to occupy as much area on the page as possible. The nice
thing about the file produced is that it will work and produce
similar results on, for example, a 200dpi device (like an
Apple Laserwriter) or on a 600dpi device (like a Verityper).
After executing, the module resets the filename parameter to
NULL. This has the effect of requiring the user to enter a new
filename for each subsequent invocation of this module before
executing.
INPUTS
field 2d scalar byte
PARAMETERS
filename
a typein which allows the user to enter the name for
the output file which will contain the postscript.