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Annotation of OpenXM_contrib/gnuplot/docs/old/README.xli, Revision 1.1.1.1

1.1       maekawa     1: From gregor@kafka.saic.com Tue Apr  7 21:24:49 1992
                      2: Return-Path: <gregor@kafka.saic.com>
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                      4:        id AA01805; Tue, 7 Apr 92 21:24:46 PDT
                      5: Received: by kafka.saic.com (4.1/SMI-4.1)
                      6:        id AA28518; Tue, 7 Apr 92 21:34:46 PDT
                      7: Date: Tue, 7 Apr 92 21:34:46 PDT
                      8: From: gregor@kafka.saic.com (gregg hanna)
                      9: Message-Id: <9204080434.AA28518@kafka.saic.com>
                     10: To: woo@ra-next.arc.nasa.gov
                     11: Subject: New terminal mode for gnuplot.
                     12: Cc: gregor@kafka.saic.com
                     13: Status: R
                     14:
                     15: Included in this shar is a patch and new files which provide a
                     16: new terminal type called 'xlib' (for x11-library mode).  The xlib
                     17: is like the x11 mode modified so that the commands previously
                     18: sent to the gnuplot_x11 driver are instead put into the output
                     19: file.  In addition, the gnuplot_x11.c file has been rewritten to
                     20: be a callable function, which will read a xlib file and draw the
                     21: described graph in a drawable.
                     22:
                     23: The following files are included:
                     24:
                     25:        xlib.trm - A copy of x11.trm, modified to use the
                     26:                normal output file instead of a pipe.
                     27:
                     28:        gnulib_x11.c - A rather severe rewrite of gnuplot_x11.c,
                     29:                as well as a few functions used to interface
                     30:                into the user code.
                     31:
                     32:        gnulib_x11.h - Specs for user callable routines.
                     33:
                     34:        xlibtest.c - a test program written in Motif, it will
                     35:                run gnuplot and build a xlib output file, then
                     36:                plot that on the screen.  Resizing the window
                     37:                will redraw the plot, scaled appropriately,
                     38:                without re-running gnuplot.
                     39:
                     40:        xlibtest.demo - the gnuplot command to draw the test plot.
                     41:
                     42:        makefile.xlib - minimal make file for the xlibtest program
                     43:
                     44: The following patch is included:
                     45:
                     46:        term.patch - Patch to 'term.c' which adds the specification
                     47:                for 'xlib' and includes the 'xlib.trm' file.
                     48:
                     49: These changes were made relative to gnuplot3p2b6, and the patch
                     50: is in unified diff format.  Please drop me a line if you would like
                     51: it in a different format or relative to a different revision level.
                     52:
                     53: To get full use out of the xlib mode, the file gnulib_x11.c needs
                     54: to be covered by the alternate GPL for libraries, since the gnulib.o
                     55: file must be linked into the user's executable.  Until that is
                     56: the case, I will (of course) treat the file as covered by the GPL,
                     57: meaning that I cannot include the gnulib_x11 drawing routines in my
                     58: software.
                     59:
                     60: The 'xlib' mode provides functionality similar to the 'xpm' terminal
                     61: mode I sent earlier.  The 'xlib' mode is *much* faster, the disk
                     62: files are smaller, and plots are re-sizable.  The only advantage
                     63: of the 'xpm' mode is that XPM format files are more transportable.
                     64: This would seems to be less important since there is a ppm terminal
                     65: mode.
                     66:
                     67: I'm quite excited about this mode, since it allows executing software
                     68: the ability to generate gnuplot plots quickly while integrating the
                     69: output into it's own display.  I hope you will consider it for
                     70: a future gnuplot release and, at that time, consider the LGPL
                     71: option.  I would appreciate knowing your views on the subject, since
                     72: I would like to use the 'xlib' mode in my company's software.
                     73:
                     74: Thanks for a great program!
                     75:
                     76:                                          gregg hanna
                     77:                                          gregor@kafka.saic.com
                     78:
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