Introduction to DGML
Here is what a simple directed graph with three nodes and two links between them looks like
<?xml version='1.0' encoding='utf-8'?> <DirectedGraph xmlns="http://schemas.microsoft.com/vs/2009/dgml"> <Nodes> <Node Id="a" Label="a" Size="10" /> <Node Id="b" Background="#FF008080" Label="b" /> <Node Id="c" Label="c" Start="2010-06-10" /> </Nodes> <Links> <Link Source="a" Target="b" /> <Link Source="a" Target="c" /> </Links> <Properties> <Property Id="Background" Label="Background" DataType="Brush" /> <Property Id="Label" Label="Label" DataType="String" /> <Property Id="Size" DataType="String" /> <Property Id="Start" DataType="DateTime" /> </Properties> </DirectedGraph>
which looks like this:
The complete XSD schema for DGML is available at . DGML not only allows describing nodes and links in a graph, but also annotating those nodes and links with any user defined property and/or category.
Applications supporting DGML
- Visual Studio 2010 and later, a suite of tools for Software Developers including support for generating DGML graphs from relationships in code and for viewing any DGML document generated by any other tool.
- GraphML, an XML format for graphs
- GXL, graph exchange format based on XML -- GXL
- GML is another widely used graph exchange format. -- GML
- Dot Language, a format for describing graphs and their presentation, for the Graphviz set of tools.
- http://msdn.microsoft.com/vstudio homepage of Visual Studio
- http://schemas.microsoft.com/vs/2009/dgml page describing the XSD schema for DGML
- http://www.lovettsoftware.com contains videos showing how to use DGML graphs in Visual Studio
- http://msdn.microsoft.com/en-us/library/dd409365.aspx, documentation on how to use DGML