Graphs and Plots

Hi all,

For the project I'm working on, I need to draw lots of graphs and plots of statistical data.
I was thinking about matplotlib, but I don't find anything about it combined with Zope3/Grok.
Is there anything like that available somewhere?

If not, I'll have to do it myself, but I'm not sure what would be the best way to tackle this?
* Easiest would be to make separate views for each chart that I pass in the HTML img src attribute. However, that might incur extra overload, as I might have to do the same calculations twice or more: once for the main page and once for each graph or plot. I could try to cache the data somehow (session data or memcached), but that might complicate things. You could refer to a single graph by it's url, however, without ever needing the main HTML page.

* Another approach would be like the Google Chart API, that the graph data is encoded in the url, and that I have one generic view that can render any chart by changing the url GET params.
That, however, would force one to go to the main html page to get the right GET params to go with the graphs.

What would you guys suggest?
I personally think the view per chart with memcached as a possible later optimization would be best, but I'd like a 'second opinion' on this one.

Thanks!