ocr: - pial El a on Enomssb d a E B a MSIEI 29014 . - à 2 - naroi FAXA on BA à - - - - * ay - e u Eun : 1 - AC - 4 - Me - - - Boston slte 13 ldssl la 4 : - ai - - * a - - Sro - New York DEN0N - - a Philaclelphia Baltmore Washington Figure 1. Demographic mapping such as this thematic map of population density is the staple of business-oriented GIS applications. In this map, ESRI's ArcView greatly enhances the analyst's ability to visualize ethnic distribution in several Eastern cities simultaneously.