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<p>JXGraph allows you to plot functions on a graph. JXGraph in Java takes a Plot (usually an anonymous function) to plot a function. Because anonymous classes are not possible in Groovy, a new class, GroovyPlot, has been created that can take a closure and generate a Plot.</p>

<p>The graph node in SwingXBuilder adds a property <em>plots</em> that takes a multi-dimensional List as a parameter. The internal list has a Color component and a closure representing the plot. Here is an example of code plotting sin x : </p>
<table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>
def swing = new SwingXBuilder()
def frame = swing.frame(size:[300,300]) {
		graph(plots:[[Color.GREEN,{value -> Math.sin(value)}]])
	}.show()
</pre></td></tr></table>
<p>And here is the corresponding graph: </p>

<p><img class="confluence-embedded-image" src="/download/attachments/230400700/jxgraph_sin_x.png?version=1&amp;modificationDate=1368986558046" data-image-src="/download/attachments/230400700/jxgraph_sin_x.png?version=1&amp;modificationDate=1368986558046" data-linked-resource-id="230565174" data-linked-resource-type="attachment" data-linked-resource-default-alias="jxgraph_sin_x.png" data-base-url="http://docs.codehaus.org" data-linked-resource-container-id="230400700" title="null > jxgraph_sin_x.png"></p>

<p>To graph, for instance, the cosine as well as the sine, the graph node signature would be:<br class="atl-forced-newline" /> <br class="atl-forced-newline" /></p>

<table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>
graph(plots:[ [Color.GREEN, {value -> Math.sin(value)}], [Color.BLUE, { value -> Math.cos(value)}] ])
</pre></td></tr></table>