The techniques of analytic mapping and of geographic information systems (GIS) have become increasingly important tools for analyzing census, crime, environmental and consumer data. The authors of this significant volume discuss data access, transformation and preparation issues, and how to select the appropriate analytic graphics techniques through a review of various GIS and common data sources, such as census products, TIGER files, and CD-ROM access. They describe each procedure, review its assumptions and requirements and provide illustrative output for sample data using selected...