Iftach Pearlman City of Leesburg, GIS Keyetta Jackson Lake County, GIS Francis Franco Metropolitan Planning Organization, GIS. Presentation Outline. What is GIS Uses of GIS Who Uses GIS Website Links Questions. What is GIS. What is GIS.
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A geographic information system (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present all types of geographical data.
A GIS combines individual layers of data such as customers, buildings, and streets to model the real world.
Map where things are.
Mapping where things are lets you find places that have the features you’re looking for, and see where to take action. You can also begin to understand why things are where they are.
Mapping the most and the least lets you compare places based on quantities so you can see which places meet your criteria, or understand the relationships between places.
Mapping the density of features lets you see the patterns of where things are concentrated. This helps you find areas that require action or meet your criteria, or monitor changing conditions.
Find what’s inside.
Finding what’s inside lets you see whether an activity occurs inside an area, or summarize information for each of several areas so you can compare them.
Find what’s nearby.
Finding what’s nearby lets you see what’s within a set distance or travel range of a feature. This lets you monitor events in an area, or find the area served by a facility of the features affected by an activity.
GIS lets you map where things move, or the changing conditions in a place over time. Knowing what’s changed can help you understand how things behave over time, anticipate future conditions, or evaluate the results of a an action or policy.