I'd like to symbolize polygons with a point at the centroid. Does anyone have suggestions how to accomplish this without creating a new shapefile?
I'm using ArcGIS 10.0.
You can use the symbology option 'multiple attributes' and set the size min/max for the symbol to the same, and it will create a dot in the middle of each polygon. also, you could probably do the same with maplex labeling to place a '.' label at the centroid of each shape
I would use the "centroid" tool and symbolize the attributes created from the polygon layer used as an input.