Die aufgeführte XML-Date enthält den Graphen aus der Abbildung 1
Abbildung 1: Ein Hypergraph
<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://gravel.darkmoonwolf.de/xmlns/gravelml.xsd">
<!-- -->
<!-- mathematsche Datenfelder -->
<!-- -->
<key id="graphtype" for="graph" attr.name="type" attr.type="string" />
<!-- Values for hyperedges -->
<key id="hyperedgevalue" for="hyperedge" attr.name="hyperedge.value" attr.type="int">
<default>1</default>
</key>
<key id="hyperedgename" for="hyperedge" attr.name="hyperedge.name" attr.type="string">
<default>E_{$ID}</default>
</key>
<!-- Values for nodes -->
<key id="nodename" for="node" attr.name="node.name" attr.type="string">
<default>v_{$ID}</default>
</key>
<!-- -->
<!-- visuelle Datenfelder -->
<!-- -->
<!-- Hyperedge Details -->
<key id="hyperedgewidth" for="hyperedge" attr.name="hyperedge.width" attr.type="int">
<default>1</default>
</key>
<key id="hyperedgemargin" for="hyperedge" attr.name="hyperedge.margin" attr.type="int">
<default>8</default>
</key>
<key id="hyperedgetext" for="hyperedge" attr.name="hyperedge.text" attr.complexType="edge.text.type">
<default>
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</default>
</key>
<key id="hyperedgeline" for="hyperedge" attr.name="hyperedge.line" attr.complexType="edge.line.type">
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</key>
<key id="hyperedgeshape" for="hyperedge" attr.name="hyperedge.shape" attr.complexType="hyperedge.shape.type"/>
<!-- Node Values -->
<key id="nodeform" for="node" attr.name="node" attr.complexType="node.form.type">
<default>
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</default>
</key>
<key id="nodetext" for="node" attr.name="node.text" attr.complexType="node.text.type">
<default>
<nodetext distance="18" rotation="270" size="12" visible="true"/>
</default>
</key>
<!-- -->
<!-- der Graph -->
<!-- -->
<graph id="HG" edgedefault="undirected">
<data key="graphtype">visual hypergraph</data>
<node id="1">
<data key="nodeform"><form type="Circle" x="122" y="190" size="5"/></data>
<data key="nodetext"><nodetext distance="12"/></data>
</node>
<node id="2">
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<data key="nodetext"><nodetext distance="12" rotation="0"/></data>
</node>
<node id="3">
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<data key="nodetext"><nodetext distance="12" rotation="315"/></data>
</node>
<node id="4">
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</node>
<node id="5">
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<data key="nodetext"><nodetext distance="12" rotation="90"/></data>
</node>
<node id="6">
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</node>
<node id="7">
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</node>
<node id="8">
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<data key="nodetext"><nodetext distance="12"/></data>
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<hyperedge id="1">
<endpoint node="3"/>
<endpoint node="4"/>
<endpoint node="5"/>
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