tomk@ur-laser.uucp (Tom Kessler) (07/16/85)
I need some help with an S device driver I am writing. I am writing
a driver to produce an impress file for later use on an imagen laser
printer. The driver is written in c with some .C using the S interface
language (an m4 thing plus hacks) so that things can be called correctly
from the apropriate fortran routines. The driver works very well in
the interactive mode it succesfully opens writes to and closes the
impress file.
The problem occurs when I try to run S with the imagen device driver
that I have created in the batch mode. It creates the impress file
and never writes to it. It sits for a long period of time after the
actual S commands are run and then exits without calling the line
printer daemon to print the S file (the line printer daemon is called
when I run S interactively and the file is removed as it should be)
the temporary file is left behind in this case. The routine zparmz
is certainly never called. It seems as if allthat gets done is that
the file gets initialized in batch mode but never used.
I get no error messages whatsoever from S.
Yes I have created a ~s/graph/lib/imagen.z library and a Standalone
driver in ~s/graph/bin/imagen following the code in the unixplot and
pic device drivers as a model.
I have also read the "Extending the S system" and "S an Interactive
Environment for Data Analysis and Graphics" both by Becker and
Chambers (by the way both are excellent but don't have the info
I need)
One further question what does S expect line width to vary from and
to in a device driver. The imagen has 20 different line widths
and labels them 1 through 20. Does S want line with in Pixels?
Inches? Normalized device coordinates?
By the way my copy of S is about a year old and is running on a
Sun-2 Workstation.
Any help will be greatly appreciated.
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Tom Kessler {allegra |seismo }!rochester!ur-laser!tomk
Laboratory for Laser Energetics Phone: (716)- 275 - 5101
250 East River Road
Rochester, New York 14623