Gri is a programming language for scientific graphics. It can make
x-y graphs, contour-graphs, and image graphs. In addition, Gri has a
full suite of low-level graphical elements and sufficient programming
capabilities (loops, subroutines, etc) to permit complex
Gri is not a point-click application. In some ways it is analogous to
TeX. Extensive power rewards tolerance of a modest learning curve.
For more information, please consult online
info manual is normally accessed by typing
html manual is located at
N.N.N is the version number.
html FAQ is located at
Two Perl scripts are provided with Gri to manipulate the PostScript
gri_merge is used to merge multiple Gri output files into a single PostScript file.
gri_merge -h for usage information.
gri_unpage is used is split a multi-page Gri output file (in which the
new page command was used) into separate PostScript files, one for each page. Type
emacs mode is provided with Gri.
The mode is installed automatically in Debian by the elisp file:
The emacs mode itself is
gri-mode.el and is installed on Debian as
Byte-compiled versions of this file are produced for every flavour of Emacs
that is installed, and are located in places like