Introduction to GIS

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

2. Week 1_Thursday

3. 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 Week 1_Thursday

4. A GIS map contains layers - a collection of graphic objects that are alike • Layers may contain features or surfaces • Features 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 • Raster • Aerial Photos • Satellite Images • DEM Week 1_Thursday

5. Data Sources • Hardcopy Maps • Coordinates • Digital Data • GPS Week 1_Thursday

6. GIS Functions • Capture • Store • Query • Analyze • Display • Output Week 1_Thursday

7. Query • Select by Attributes • Identify • Select by Location Week 1_Thursday

8. Analysis • Extract • Overlay • Proximity • Statistics Week 1_Thursday

9. Display • Reports • Maps • Graphs Week 1_Thursday

10. Output • Web (*.kml , *.kmz) • Animation (*.avi , *.mov) • Export *.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 Week 1_Thursday

11. GIS Software Tools Available in GIS Lab Week 1_Thursday

12. GIS Hardware Week 1_Thursday