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<title>The Gri graphing language</title>
<META NAME="author" CONTENT="Dan E. Kelley">
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<META NAME="description" CONTENT="Gri is an extensible plotting language for producing scientific graphs, such as x-y plots, contour plots, and image plots. It was written by a scientist and therefore has the sorts of things a scientist needs. It is much like LaTeX, in that it rewards users who climb the learning curve, in a way that GUI-based programs do not. Gri is a free version of the more powerful commercial program Gre (still in development).">
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<br>
Chapters:
<br>
<a href="Introduction.html">1: Introduction</a><br>
<a href="SimpleExample.html">2: Simple example</a><br>
<a href="InvokingGri.html">3: Invocation</a><br>
<a href="GettingMoreControl.html">4: Finer Control</a><br>
<a href="X-Y.html">5: X-Y Plots</a><br>
<a href="ContourPlots.html">6: Contour Plots</a><br>
<a href="Images.html">7: Image Plots</a><br>
<a href="Examples.html">8: Examples</a><br>
<a href="Commands.html">9: Gri Commands</a><br>
<a href="Programming.html">10: Programming</a><br>
<a href="Environment.html">11: Environment</a><br>
<a href="Emacs.html">12: Emacs Mode</a><br>
<a href="History.html">13: History</a><br>
<a href="Installation.html">14: Installation</a><br>
<a href="Bugs.html">15: Gri Bugs</a><br>
<a href="TestSuite.html">16: Test Suite</a><br>
<a href="GriInThePress.html">17: Gri in Press</a><br>
<a href="Acknowledgments.html">18: Acknowledgments</a><br>
<a href="License.html">19: License</a><br>
<br>
Indices:<br>
<a href="ConceptIndex.html"><i>Concepts</i></a><br>
<a href="CommandIndex.html"><i>Commands</i></a><br>
<a href="BuiltinIndex.html"><i>Variables</i></a><br>
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Gri is an extensible
plotting language for producing scientific graphs, such as
<A HREF="X-Y.html">x-y plots</A>,
<A HREF="ContourPlots.html">contour plots</A>, and
<A HREF="Images.html">image plots</A>.
<p>
This document describes Gri 2.12.23,
<br>(c) 1991-2008 <A HREF="http://www.phys.ocean.dal.ca/~kelley"> Dan Kelley.</A>
<p><br>
<b>New users:</b>
To see if Gri might be useful to you, spend a few minutes
reading the
<A HREF="Introduction.html">introduction</A>, the
<A HREF="SimpleExample.html">simple example</A> tutorial, the
<A HREF="./FAQ.html">FAQ</A> and the
<A HREF="http://gri.sourceforge.net/gri-cookbook/index.html">
cookbook.</A>
It is also a good idea to check out the real-world
<A HREF="Examples.html">examples</A>.
Then you should return here to scan the table of contents.
<P>
<b>Experienced users:</b>
To check the syntax of a command, consult
the <A HREF="ListOfGriCommands.html"> list
of Gri commands</A>. See
the <A HREF="History.html">history</a>
to learn how Gri has changed over time.
<p>
<b>Open-Source Development:</b>
Gri is distributed under an OpenSource licence (GPL).
To monitor (or contribute to) the development
process, visit
<a href="http://gri.sourceforge.net">
<tt>gri.sourceforge.net</tt></a>.
<p>
<b>See also:</b>
The <a href="http://www.phys.ocean.dal.ca/~kelley/gre">
Gre language</a> combines Gri features with Perl features.
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