I tried to create a Radar Chart using Google Char API syntax with Eastwood, but found it was impossible.
Looking at the code it seems it is not implemented (chart type: cht=r), yet not documented in the README as unimplemented... hence the bug report.
Here is my test :
which gives this exception :
javax.servlet.ServletException: Unknown chart type: r
Here is the radar chart result from Google Maps API:
Tested on Eastwood release 1.0.0.