Thanks,
Running Sunburst examples in Pharo 2 & 3 gives red screen of death.
There is a missing method #createPath: used by ROArc. I will take a look tomorrow but ideas are welcomed.
To install Roassal I've evaluated:
Gofer new smalltalkhubUser: 'ObjectProfile'
project: 'Roassal';
package: 'ConfigurationOfRoassal';
load.
(Smalltalk at: #ConfigurationOfRoassal) load
For the visualization is done with Circos. This is the best explanation of Circos drawings (a must-read really) I've found so far:
http://mkweb.bcgsc.ca/talks/datavisualization/
Too sad a tool like Circos is written in Perl...