What is GIS? GIS is an integrated system used to view and manage information about geographic...

Introduction to GISWhat is GIS?

GIS is an integrated system used to view and manage information about geographic places, analyze spatial relationships, and model spatial processes.

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All About GIS . . .GIS allows you to discover patterns and

relationships you cannot easily see in a table

GIS stores two types of information:

Features – Objects found on Earth

( mountains, rivers, and lakes)

Attributes – Description of Features

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Raster Aerial Photos Satellite

Images DEM

A GIS map contains layers - a collection of graphic objects that are alikeLayers may contain features or surfacesFeatures have

shape and size location can be displayed at different sizes linked to information spatial relationships

Surfaces have a geographic expanse numeric values

Vector Points Lines Polygons

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Data SourcesHardcopy

Maps

Coordinates

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Digital Data

GPS

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GIS FunctionsCapture

Store

Query

Analyze

Display

Output

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QuerySelect by Attributes

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Identify

Select by Location

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AnalysisExtract

Overlay

Proximity

Statistics

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Display

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Graphs

Reports

Maps

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Output

Animation (*.avi , *.mov)

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*.emf - Enhanced Metafile*.eps - Encapsulated PostScript*.ai – Adobe Illustrator*.pdf – Portable Document Format*.svg – Scalable Vector Graphics *.bmp – Bitmap*.jpg – Joint Photographic Experts Group*.png – Portable Network Graphics *.tif – Tagged Image File Format *.gif - Graphics Interchange Format

Export

Web (*.kml , *.kmz)

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GIS Software Tools Available in GIS Lab

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GIS Hardware

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