GeoData Choropleth Map Sample This sample shows how to create a simple choropleth map which retrieves boundary data from the GeoData API in the Bing Spatial Data Services. Using the GeoData API provides two key bbenifits; you don't have find and host the boundary data your self, the boundary data is also localized such that disputed borders will align with the views of the users region. This sample uses US literacy data at the state level that is stored in a simple tab spaced value file.