1. Something basic about GIS

2. What is GIS ? GIS = Geographic Information Systems Three components: Geography – the real world Information – data and information Systems – technologies

3. A Definition of GIS GIS = Geographic Information Systems Worboys, 1995: A Geographic Information System (GIS) is a computer-based information system that enables one to efficiently capture, store, update, manipulate, analyze, and display all forms of geographically referenced information.

4. Functions of GIS Collection Storage & Management Retrieval Conversion Analysis Display

5. Applications of GIS How GIS can be used: Infrastructure Management Transportation Network Routing Floodplain Management Emergency Response Planning Noise Pollution Analysis Participatory Planning Processes Jobs/Housing Spatial Balance and more …

6. The GIS Data Model Data Organized by Layers/Themes Digital Orthophoto Streets Hydrography Parcels Buildings Zoning Utilities Administrative Boundaries

7. The GIS Data Model Layers Integrate Using Explicit Location on the Earth’s Surface

8. Types of GIS Data Describes Objects In Terms Of: Spatial Data Absolute X,Y Coordinates – Locations Size, and Shape Attributes Characteristics associated with Geography

9. GIS Associates Spatial and Attribute Data in a Geo-Referenced Database ID AREA PERIM CLASS LANDUSE 1 260210 20688 100 Single Family 2 18210 20688 100 Multi Family 3 260210 20688 100 Commercial 4 258876 16880 200 Forest 5 3008 88 500 Water ARC INFO 2 1 3 4 5

10. Introduction to ArcGIS ArcGIS is a software program, used to create, display and analyze geospatial data, developed by Environmental Systems Research Institute (ESRI) of Redlands, California.Environmental Systems Research Institute http://www.esri.com/

11. ESRI’s ArcGIS Platform Suite of Three Integrated Applications: ArcCatalog ArcMap ArcToolbox

12. Components of ArcGIS ArcCatalog is used for browsing for maps and spatial data and managing spatial data, viewing and creating metadata. ArcMap is used for visualizing spatial data, performing spatial analysis and creating maps to show the results. ArcToolbox is an interface for accessing the data conversion and analysis function that come with ArcGIS.