If I understand your question, you want to create graduated symbols based on attributes in your feature data? (symbols will show the relative quantitative differences in the data). There is a relative easy way to do this if your data are points and you are using a recent version of Maestro. If so, the following steps in Maestro will assist you (assumes you have already created a data feature source):
1. Create a layer definition. 2. Go to the "Layer Styles" section and you'll find an icon with 3 circles (Theme Creator). Click this and it will open the "Theme Creator". 3. Under 'Column' select the feature attribute that will control the size of the graduated symbols. You can then choose other options that will control the number of symbol categories and colors. 4. Click OK, it will automatically create rules for each symbol group you created in the Theme Creator. 5. You will then have to edit the style of each symbol rule to change the size of the symbol. Assuming that you created rules to show a larger symbol for a larger number, you will incrementally increase the size of the symbol (width, height) in the style editor for each symbol rule. If your data set is in polygons and you want to show graduated symbols, I think the best approach would be to create centroids of the polygons first and then follow the above steps. You could potentially create symbol libraries based on symbol definitions: http://trac.osgeo.org/mapguide/attachment/wiki/MapGuideRfc14/Symbolization.zip (also search for an AutoDesk whitepaper titled "Building Symbol Libraries with Autodesk Mapguide Enterprise) Hope this helps. -Steve -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Proportional-symbols-tp4994607p4994893.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapguide-users
