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What Is GIS? 

A GIS is a collection of computer hardware, software, and geographic data for capturing, managing, analyzing, and displaying all forms of geographically referenced information. source: ESRI

GIS allows for the comparison of geographic data and information associated with those geographic areas. Questions like, “How many school aged children are within 1000 ft of a proposed elementary school?” can be answered with GIS.

GIS maintains data in “layers.” Each layer represents a certain type of feature: lines, points and polygons. Features have associated information. For instance, a road is a line feature that has information such as its name. Within each layer rules can be created in order to maintain specific characteristics and standardizations. Example, features within the land parcels layer should not overlap each other. Requiring this type of characteristic prevents technicians from overlapping lots on top of each other.  The collection of layers is housed in a spatial database. Relationships between layers can be made at this level, providing even more detailed models which better depict real life

To find out more about GIS visit GIS.com

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George A. Purefoy Municipal Center

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