What Gri is
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 point-click. In some ways it is analogous to TeX.
Extensive power rewards tolerance of a modest learning curve.
For the rest of this document, the symbol "N.N.N" will be taken to
stand for the Gri version number, e.g. N.N.N might represent the
version numbered 2.6.0, say.
Obtaining Gri for RedHat
Follow the links at
to get an RPM package, and then install it by doing
rpm -U gri-N.N.N-1.i386.rpm
The source is also available as a gzipped tarfile and as an RPN source
The package provides a cursory manpage, available by typing
at the unix prompt; the main documentation is available in "info"
format, by typing
at the unix prompt (or through access by emacs or other facilities).
Many users will find it easier to study the HTML version of the
documentation, available at the local URL
The Gri programming languages, and all manuals and online help-files,
are (c) 1991-2009 Dan E. Kelley <Dan.Kelley@Dal.CA>, and covered by
the GNU icense GPLv3 or later.