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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>
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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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<h2>8.2: Contouring</h2>
This example plots a section of dT/drho vs x and rho (actually, sigma-t,
as the label indicates). The contours are unlabelled; I'm only
interested in the zero crossings.
<p>
There are some other useful tricks in this example, such as calling
`<font color="#82140F"><code>awk</code></font>' and `<font color="#82140F"><code>wc</code></font>' from the unix system.
<p>
(In the plot shown, all `<font color="#82140F"><code>query</code></font>' questions were answered with
carriage return, yielding the defaults; the `<font color="#82140F"><code>-p</code></font>' flag was specified
on execution, so the time stamp was not drawn.)
<p>
<A HREF="example8.png">
<IMG ALT="Example 8" SRC="example8-tiny.png"
ALIGN=top>
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<A HREF="example8.html">The command-file.</A> <P>
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