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<br>
Chapters:
<br>
&nbsp;&nbsp;<a href="Introduction.html">1: Introduction</a><br>
&nbsp;&nbsp;<a href="SimpleExample.html">2: Simple example</a><br>
&nbsp;&nbsp;<a href="InvokingGri.html">3: Invocation</a><br>
&nbsp;&nbsp;<a href="GettingMoreControl.html">4: Finer Control</a><br>
&nbsp;&nbsp;<a href="X-Y.html">5: X-Y Plots</a><br>
&nbsp;&nbsp;<a href="ContourPlots.html">6: Contour Plots</a><br>
&nbsp;&nbsp;<a href="Images.html">7: Image Plots</a><br>
&nbsp;&nbsp;<a href="Examples.html">8: Examples</a><br>
&nbsp;&nbsp;<a href="Commands.html">9: Gri Commands</a><br>
&nbsp;&nbsp;<a href="Programming.html">10: Programming</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> 
</A> 
<A HREF="example8.html">The command-file.</A> <P> 









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