Search in the archive for pie chart. There was a nice example by Steve Lime end of 2004. See below.
Best regards, Bart Forwarded message: Hi all: I was updating mapgd.c today to make use of GD functions that appeared in GD 2.0.x. I made a small modification to the marker drawing code for ELLIPSE symbols, specifically circles. Now if you specify a style angle it is interpreted as a "pie slice". You can do things like: http://maps.dnr.state.mn.us/testing/charts/test.gif http://maps.dnr.state.mn.us/testing/charts/test.map Since you can load an angle from an attribute (via ANGLEITEM) you can build simple pie charts pretty easy. Only problem is it's hard to do more than 2 colors, and the origin is always 0. Assuming folks are ok with the modification (it's only 5 lines of code) what about adding a STARTANGLE parameter? We could probably do some auto computation of starting angles between styles so that multiple element charts would be possible/easy to construct. Steve Bart van den Eijnden Syncera IT Solutions Postbus 270 2600 AG DELFT tel.nr.: 015-7512436 email: [EMAIL PROTECTED] >>> Paul james <[EMAIL PROTECTED]> 11/23/2005 7:43 PM >>> Hi all... Is it posible to make Thematic mapping with mapserver? I need associante some graph with my map ( Each state with a pizza diagram ).. How can I do that? ty
