I think you would be able to do this with Quartz Composer. Generate
your map as an image in a supported format, and then you can render
it onto a horizontal surface ("billboard", in Quartz Composer
terminology) with the pie charts floating above the appropriate
locations. You can change your viewpoint/rotation once the objects
are in place.
Quartz Composer is installed as part of the Apple developer tools,
which are free and included on the system disk, but which are not
loaded onto your machine by default.
http://developer.apple.com/graphicsimaging/quartz/quartzcomposer.html
http://developer.apple.com/documentation/GraphicsImaging/Conceptual/QuartzComposer/qc_intro/chapter_1_section_1.html
--
Hal Mueller [EMAIL PROTECTED]
My Treo beat up your iPhone.
