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- From gregor@kafka.saic.com Tue Apr 7 21:24:49 1992
- Return-Path: <gregor@kafka.saic.com>
- Received: from kafka.saic.com by ra-next.arc.nasa.gov (NeXT-1.0 (From Sendmail 5.52)/NeXT-1.0)
- id AA01805; Tue, 7 Apr 92 21:24:46 PDT
- Received: by kafka.saic.com (4.1/SMI-4.1)
- id AA28518; Tue, 7 Apr 92 21:34:46 PDT
- Date: Tue, 7 Apr 92 21:34:46 PDT
- From: gregor@kafka.saic.com (gregg hanna)
- Message-Id: <9204080434.AA28518@kafka.saic.com>
- To: woo@ra-next.arc.nasa.gov
- Subject: New terminal mode for gnuplot.
- Cc: gregor@kafka.saic.com
- Status: R
-
- Included in this shar is a patch and new files which provide a
- new terminal type called 'xlib' (for x11-library mode). The xlib
- is like the x11 mode modified so that the commands previously
- sent to the gnuplot_x11 driver are instead put into the output
- file. In addition, the gnuplot_x11.c file has been rewritten to
- be a callable function, which will read a xlib file and draw the
- described graph in a drawable.
-
- The following files are included:
-
- xlib.trm - A copy of x11.trm, modified to use the
- normal output file instead of a pipe.
-
- gnulib_x11.c - A rather severe rewrite of gnuplot_x11.c,
- as well as a few functions used to interface
- into the user code.
-
- gnulib_x11.h - Specs for user callable routines.
-
- xlibtest.c - a test program written in Motif, it will
- run gnuplot and build a xlib output file, then
- plot that on the screen. Resizing the window
- will redraw the plot, scaled appropriately,
- without re-running gnuplot.
-
- xlibtest.demo - the gnuplot command to draw the test plot.
-
- makefile.xlib - minimal make file for the xlibtest program
-
- The following patch is included:
-
- term.patch - Patch to 'term.c' which adds the specification
- for 'xlib' and includes the 'xlib.trm' file.
-
- These changes were made relative to gnuplot3p2b6, and the patch
- is in unified diff format. Please drop me a line if you would like
- it in a different format or relative to a different revision level.
-
- To get full use out of the xlib mode, the file gnulib_x11.c needs
- to be covered by the alternate GPL for libraries, since the gnulib.o
- file must be linked into the user's executable. Until that is
- the case, I will (of course) treat the file as covered by the GPL,
- meaning that I cannot include the gnulib_x11 drawing routines in my
- software.
-
- The 'xlib' mode provides functionality similar to the 'xpm' terminal
- mode I sent earlier. The 'xlib' mode is *much* faster, the disk
- files are smaller, and plots are re-sizable. The only advantage
- of the 'xpm' mode is that XPM format files are more transportable.
- This would seems to be less important since there is a ppm terminal
- mode.
-
- I'm quite excited about this mode, since it allows executing software
- the ability to generate gnuplot plots quickly while integrating the
- output into it's own display. I hope you will consider it for
- a future gnuplot release and, at that time, consider the LGPL
- option. I would appreciate knowing your views on the subject, since
- I would like to use the 'xlib' mode in my company's software.
-
- Thanks for a great program!
-
- gregg hanna
- gregor@kafka.saic.com
-
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