I'm using ArcView 9.3.1. and try to do the following:
In order to represent a polygon by the values in the attribute table I want to show that by circle (symbology-quantities-graduated symbols). I did it, but I need to make a change (specify the width of the circle) to the symbology. How can I change that? I've tried with the mask effect (halo), but the result isn't perfect like a circle. Is there any solution/alternative?