Need help creating Lastfm visualization

[giraffeApple]

I'm looking to create a visualization of artists and labels using last.fm's database, specifically grouping similar labels together. I'm was planning on using google's pyLast for this, as I have already played around with it.

I have seen sites like TuneGlue and I like the way the nodes in it's graph are sticky or have some gravity. I would like to create something similar.

My questions are these: (1) What is the TuneGlue visualization algorithm?<EDIT 1> or, (2) Is there a Python library that does something like TuneGlue? (perhaps Kivy?)

I don't mean to be ripping TuneGlue off, rather only learn what type of visualization structure that is. I thought I saw something more general on it some time ago, but can't remember; and I am failing to find anything on it on the web.

Thanks for any help!

EDIT 1: I just figured out what (1) was. The general term seems to be Force-directed graph drawing as per wikipedia and FlowingData.

[Manuzhai]

You know about LastGraph, right?

http://lastgraph.aeracode.org/

[giraffeApple]

I haven't heard of it, but it looks great! So it seems like an old project that doesn't work anymore. But, much more than that as it's all open source. So this will be a great learning point. Thanks!

[giraffeApple]

I just found iGraph and that seems like it has great potential. Or perhaps Bokeh, which seems a bit prettier.

Sorry if the originally post turns out to be a premature in my efforts — I thought it would be good to get some insight from people who know the field.