-Thematic maps emphasizes a particular theme or special topic such as the average distribution of rainfall in an area. They are different from general reference maps because they do not just show natural features like rivers, cities, political subdivisions and highways. Instead, if these items are on a thematic map, they are simply used as reference points to enhance one's understanding of the map's theme and purpose.
-This thematic map of the lower 48 states shows, by range, the activities you want. The colors are ramped from light (0) to dark red (more than 7,000 interest items). Thematic maps can depict any data value by county, state, MSA, ZIP Code, census tract, etc of emerging businesses.
source: http://www.greenmailservices.com/thematicmap.asp
No comments:
Post a Comment