GraphML is a xml format created in 2001. GraphML is an XML-based file format for graphs. The GraphML file format results from the joint effort of the graph drawing community to define a common format for exchanging graph structure data. It uses an XML-based syntax and supports the entire range of possible graph structure constellations including directed, undirected, mixed graphs, hypergraphs, and application-specific attributes.. Read more on Wikipedia...

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Example code from Wikipedia:

<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns=""  
  <graph id="G" edgedefault="undirected">
    <node id="n0"/>
    <node id="n1"/>
    <edge id="e1" source="n0" target="n1"/>

Last updated August 9th, 2020

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