Name        : gri                          Relocations: (not relocatable)
Version     : 2.12.23                           Vendor: ALT Linux Team
Release     : alt2                          Build Date: Tue Apr  9 11:22:52 2013
Install date: (not installed)               Build Host: real-sisyphus.hasher.altlinux.org
Group       : Development/Tools             Source RPM: (none)
Size        : 3558964                          License: GPL v2
Packager    : Eugeny A. Rostovtsev (REAL) <real at altlinux.org>
URL         : http://gri.sourceforge.net
Summary     : A language for scientific illustration
Description :
Gri is a language for scientific graphics programming.  It is a
command-driven application, as opposed to a click/point application.
It is analogous to latex, and shares the property that extensive power
is the reward for tolerating a modest learning curve.  Gri output is
in industry-standard PostScript, suitable for incorporation in
documents prepared by various text processors.

Gri can make x-y graphs, contour-graphs, and image graphs.  In
addition to high-level capabilities, it has enough low-level
capabilities to allow users to achieve a high degree of customization.
Precise control is extended to all aspects of drawing, including
line-widths, colors, and fonts.  Text includes a subset of the tex
language, so that it is easy to incorporate Greek letters and
mathematical symbols in labels.

The following is a terse yet working Gri program.  If it is stored in
a file called 'example.gri', and executed with the unix command 'gri
example', it will create a postscript file called 'example.ps' with
a linegraph connecting data points in the file called `file.dat'.

   open file.dat        # open a file with columnar data
   read columns x * y   # read first column as x and third as y
   draw curve           # draw line through data (autoscaled axes)