Multi-Variate Mapping

[eweinberg]

There are many ways to display multiple variables on a map.

One way is to put a dot density matrix on top of an additional variable.
http://srcgroup.extendthereach.com/s...ead.php?t=1278

Another way is to generate a ring or dot of varying size on top of other geographies.

1) Identify the variable you would like to map. In the attached module that is POP.

2) Generate the centroid of the related geography.

3) Calculate a value for a radius that is both relative to the variable you want to display and the size of the geography that you are working with.

4) Display on the map.