Re: Interactive node visualization (GraphViz style)
Hi:
I have no idea whether the graphviz feature in tiki still works. Can you report back about it after you tried?
As far as I know, there are some initiatives to improve the data visualization capabilities within Tiki. Please see:
http://dev.tiki.org/Visualization
In addition, you can do professional network-like visualizations with R software packages such as rgexf, and then plot the resulting graph with PluginR in a wiki page.
See: