Last night I finished my first release of a module to produce radial or radar charts using Imager.
It is currently mostly a proof of concept, teh graphs look okay but could probably do with a little touching up on the legend and title.
Anyway I am just uploading it to CPAN as I write this.
This module is based on my as-yet unreleased radial chart module for GD which is also a proof of concept but looks a little more polished. I will release teh GD version once the API is closer to that of the other GD::Graph modules.