GIS Introduction

Geographic Information Systems
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What is a Geographic Information System (GIS)?

globe and gis

GIS is a way through computers to better understand the importance of space (aka Geography).

Geography is more than just maps that a GIS (Geographic Information Sytem) allows us to see.

A paper map is merely a static snap shot. Unlike a paper map, GIS allows us to interact with data behind the map.

GIS is the next step in the evolution of maps

What we can do with GIS?

Display (visualize) the data in a map (2D/3D)
Retrieve the information
Finding a location such as address
Control the display & Navigate map

Zoom in/out
Pan

Analyze space by combining the data from different sources

GIS provides a way of pairing unlikely causes and effects

Layer

2D map

The GIS Connection...

Internet mapping (getting from one place to another)
- Google/Yahoo map
Store location decisions (how to get the most customers)
Hazardous Area determination (finding likely dangerous areas)
Environment (understanding the relationship between man and nature)