Using Spatial Data with SAS/GIS Software

Introduction to Geographic Information Systems

SAS/GIS software provides an interactive geographic information system within the SAS System. A geographic information system (GIS) is a tool for organizing and analyzing data that can be referenced spatially; that is, it is data that can be tied to physical locations. Many types of data have a spatial aspect, including demographics, marketing surveys, customer addresses, and epidemiological studies. A GIS helps you analyze your data in the context of their location.

For example, if you need to evaluate population data for census tracts, you could view the information in tabular format. However, consider how much easier and more effective it would be to view the demographic information in the context of the geography of the tracts as in Evaluating Spatially Referenced Data. When viewing information that has a spatial component, you may find it easier to recognize relationships and trends in your data if you view the information in a spatial context.

Evaluating Spatially Referenced Data

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SAS/GIS software enables you to do more than simply view your data in their spatial context. It also enables you to interact with the data by selecting features and performing actions that are based on those selections. SAS/GIS software draws on capabilities of the SAS System and enables you to access, manage, analyze, and present your data easily.

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