This incredibly brief documentation will have to suffice until I get writers block working on my dissertation.
The text files in this directory can be read by TreeViz. You can also create your own files of similar structure.
There are three types of files:
.gtm - General Treemap Data Format
.mtm - Macintosh Treemap Data Format
.ctm - Categorical Treemap Data Format
Categorical data is perhaps the easiest to import into TreeViz. I simply save Microsoft Excel spreadsheet files as plain text. Just have a look at the file "TAV VAS(C)QS.ctm", this is the data from pages 30 & 31 of Bertin's Semiology of Graphics.
General data (.gtm) is simply a list of lists (Lisp) format. This type of file is not as easy to create but you can represent the hierarchical structure explicitly. It is not very fancy.
Macintosh data is generated by TreeViz, I do not recommend messing with the text of these files.
Research questions or really hideous problems (I'm trying to write my dissertation so non-mac threatening problems will be put on a list for some other life) should be directed to brianj@cs.umd.edu.
