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README
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README
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What Gri is
===========
Gri is a language for scientific graphics applications. By 'language'
I mean that it is a command-driven application, as opposed to a
click/point application. It is analogous to latex or tex, and shares
the property that extensive power is the reward for tolerating a
learning curve. Gri output is in 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.
Control is extended to all aspects of drawing, including
line widths, colors, and fonts. Text includes a subset of the tex
language for letters and mathematical symbols in labels.
Compiling and Installing Gri
============================
The normal case is to have received the Gri source as a so-called
"tarball". If that is how you got Gri, then you should type
./configure
make
make install
at the shell to create and install Gri. If there is a problem in these
steps, trying typing
aclocal
autoconf
automake --add-missing
first to create some configuration files, and then you type
./configure
make
make install
as usual.
Copyright restrictions
======================
The Gri programming languages, and all manuals and online help-files,
are (c) 1991-2020 Dan E. Kelley <Dan.Kelley@Dal.CA>.
Gri includes a pared-down form of the popt library which in its
original form is (c) 1998 Red Had Software and distributed under the
X license.
The Gri Emacs mode (gri-mode.el) is (c) 1994-2020 Peter S. Galbraith
<GalbraithP@dfo-mpo.gc.ca>
Gri and gri-mode.el are distributed under GPLv3 license or later; see
COPYING.