There has been a bit of talk on the Applix forum about treemaps recently.
I think this type of graph would be very useful to analyse certain data types
and until Applix release their built in version, I have been using this excel addin from Microsoft Research:
http://research.microsoft.com/research/downloads/Details/3f3ed95e-26d8-4616-a06c-b609df29756f/Details.aspx
I pretty sure I can output the required csv file and then execute the command line version of the treemapper to auatmate production of graphs.
