I am trying to produce a Shaded Area map where US cities are shaded based on a count field. The data is very simple, consisiting of ZIP code and Count. I have successfully imported data using a .CSV file and UDL (SQL Server View).

I can execute "DisplayDataMap()" using the imported data and can create shaded area maps of the following geographic areas: US State [geoShowByRegion1], US County [geoShowByRegion2] and US ZIP [geoShowByPostal1]. Everything is great until I change the DisplayDataMap to use geoShowByCity. Then I receive the error: "Cannot map data because the selected geography type is invalid."

So I tried to do the same thing through the MapPoint UI itself. When I import the data by ZIP, there is no option to shade by city.

Am I doing something wrong or does MapPoint (2004 or 2006) not have the capability to create a shaded area map by city?

Thanks