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| Developed by | Microsoft |
|---|---|
| Initial release | September 2009 |
| Type of format | Directed graph |
| Extended from | XML |
| Website | docs |
Directed Graph Markup Language (DGML) is an XML-based file format for directed graphs.
Here is what a simple directed graph with three nodes and two links between them looks like
<?xml version="1.0" encoding="utf-8"?><DirectedGraphxmlns="http://schemas.microsoft.com/vs/2009/dgml"><Nodes><NodeId="a"Label="a"Size="10"/><NodeId="b"Background="#FF008080"Label="b"/><NodeId="c"Label="c"Start="2010-06-10"/></Nodes><Links><LinkSource="a"Target="b"/><LinkSource="a"Target="c"/></Links><Properties><PropertyId="Background"Label="Background"DataType="Brush"/><PropertyId="Label"Label="Label"DataType="String"/><PropertyId="Size"DataType="String"/><PropertyId="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.
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