Data visualisation with RaVis in Flex

RaVis (Relational Analysis Components) is part of the BirdEye “a community project to advance the design and development of a comprehensive open source information visualization and visual analytics library for Adobe Flex.”

The RaVis components all you to create interactive data visualisation interfaces for the analysis of relational data sets such as social networks, organisation trees, navigation systems and anything else you can think of.

To create this example I followed an article I beta tested for the Flash&Flex Developer’s Magazine.
Once you get to grips with setting up the project and components it’s really easy, this was my first proper dive into flex and I found it to be quite manageable.

The data for this example and the ones on the project website are loaded in form an xml file and are very basic, for example to make 2 nodes and connect them takes as little as this code:

// the first node
//<node id=”1″ name=”Food” desc=”Stuff you can eat” nodecolor=”0x333333″ nodesize=”50″></node>
// the second node
//<node id=”2″ name=”Dairy Products” desc=”milk and stuff ” nodecolor=”0xFFE76B” nodesize=”15″></node>
// the connection between them
//<edge fromid=”1″ toid=”2″ edgelabel=”is a group of” color=”0x000000″></edge>
More data is revealed as you drill down – double click on the ‘cow’ node.

[flash http://samhassan.co.uk/blog/swfs/ravis/main.swf w=600 h=600 mode=1]

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Update

download source (2.4mb zip)

The source contains all the folders for this project – it also includes the libRaVis.swc in the libs folder.
some comments on code