INTRODUCTION: BASIC GEOGRAPHIC CONCEPTS

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introduction : BASIC GEOGRAPHIC CONCEPTSEric JessupAssociate ProfessorSchool of Economic SciencesSeptember 13, 2010Outline What is geographical / spatial analysis and why do we care ? Different types of GEOGRAPHIC data Vector Raster Topological GIS Terms / Definitions Coordinate Systems ? GEOGRAPHIC Coordinate Systems Projected Coordinate Systems Minimizing Distortion Common File Types:Where ever you s where you ll Geographical Intersection of InformationHow knowledge is Data(Points, Lines, Areas)Raster Data(Grids/Cells)Non-GeographicalSocio EconomicDescriptive AttributesWhy should you care?The most powerful analytical tool at your disposal!

NAD 1927 (North American Datum 1927) using the Clarke 1866 spheroid ... representing geographic datasets according to a mapping standard. ArcGIS Address Locator file .loc ... Uses ASCII or binary drawing file interchange. DGN MicroStation design file format

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