522 CHAPTER 16. GRAPH MARKUP LANGUAGE (GRAPHML)
16.2.3 Attributes
In the previous section we discussed how to describe the topology of a graph in GraphML.
While pure topological information may be sufficient for some applications of GraphML,
for most of the time additional information is needed. With the help of the extension
GraphML-Attributes one can specify additional information of simple type for the elements
of the graph. Simple type means that the information is restricted to scalar values, e.g.,
numerical values and strings. The GraphML-Attributes extension is already included in the
file
http://graphml.graphdrawing.org/xmlns/1.1/graphml.xsd
thus the header of the following example file may look like the one in Section 16.2.1.
GraphML-Attributes ...