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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Getting hold of the image map</title><link rel="stylesheet" type="text/css" href="manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.0"><link rel="home" href="index.html" title="JpGraph Manual"><link rel="up" href="ch10.html" title="Chapter 10. Using CSIM (Client side image maps)"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Getting hold of the image map</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Chapter 10. Using CSIM (Client side image maps)</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="sect1" title="Getting hold of the image map"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2536328"></a>Getting hold of the image map</h2></div></div></div>
<p>There are at least two cases where the basic StrokeCSIM() method will not work.
Basically this is limited to only showing the graph in one HTML page and nothing
more. So the cases where this needs to be handled differently are</p>
<p>
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<p>In the case where you want to store the image on disk and later use it
in an <span class="markup">img</span>-tag you need to get hold of the image map.
</p>
</li><li class="listitem">
<p>In order to include multiple CSIM images ona a WEB-page. (This is not
entirely true though, it is possible to include several CSIM graph
images with the use of the <span class="markup"><iframe></span> tag. This in
effect creates it's own WEB page within the WEB page but we will not
discuss this further here.</p>
</li></ol></div><p>
</p>
<p>To get hold of the image map the function <code class="code">Graph::GetHTMLImageMap()</code>
should be used. This returns the coordinates for the hotsposts</p>
<p>An example of the use of this is shown below. With these lines the image will be
written to a file. The script then returns a HTML page which contains the Client
side image map and an img-tag which will retrieve the previously stored file.</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
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</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$graph -> Stroke ( "/usr/local/httpd/htdocs/img/image001.png" );
echo $graph -> GetHTMLImageMap ( "myimagemap001" );
echo "<img src=\"img/image001.png\" ISMAP USEMAP=\"#myimagemap001\" border=0>" ;</span></pre></td></tr></table></div><p>
</p>
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