<html> <head> <title>Gri: image example</title> </head> <body bgcolor="#FFFFFF" text="#000000" link="#0000EE" vlink="#551A8B" alink="FF0000"> <!-- newfile ImageExample.html "Gri: image example" "Examples" --> <!-- @node Grayscale Images, Combination, Contouring, Examples --> <a name="GrayscaleImages" ></a> <img src="./resources/top_banner.gif" usemap="#navigate_top" border="0"> <table summary="top banner" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="150" valign="top"> <font size=-1> <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="Acknowledgments.html">17: Acknowledgments</a><br> <a href="License.html">18: 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> </font> <td width="500" valign="top"> <map name="navigate_top"> <area alt="index.html#Top" shape="rect" coords="5,2,218,24" href="index.html#Top"> <area alt="Examples.html#Examples" shape="rect" coords="516,2,532,24" href="Examples.html#Examples"> <area alt="Gri: contouring example" shape="rect" coords="557,2,573,24" href="ContouringExample.html"> <area alt="Gri: image and contours" shape="rect" coords="581,2,599,24" href="ImageWithContours.html"> </map> <map name="navigate_bottom"> <area alt="index.html#Top" shape="rect" coords="5,2,218,24" href="index.html#Top"> <area alt="Gri: image and contours" shape="rect" coords="581,2,599,24" href="ImageWithContours.html"></map> <h2>8.3: Image created from coarsely gridded data</h2> This example reads gridded ascii station data (`<font color="#82140F"><code>Read Data</code></font>'), creates an interpolated image (`<font color="#82140F"><code>convert grid ...</code></font>'), and then plots the image. <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="example9.png"> <IMG ALT="Example 9" SRC="example9-tiny.png" ALIGN=top> </A> <A HREF="example9.html">The command-file.</A> <P> </table> <img src="./resources/bottom_banner.gif" usemap="#navigate_bottom" border="0"> </body> </html>