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INTRODUCTION: BASIC GEOGRAPHIC CONCEPTS

introduction : BASIC GEOGRAPHIC CONCEPTSEric JessupAssociate ProfessorSchool of Economic SciencesSeptember 13, 2010 Outline 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?

ArcGIS Layer file .lyr A layer is a set of rules for displaying and working with datasets in ArcMap and ArcGlobe. Layer definitions include symbol a ssignments, classifications, labeling rules, and other map use properties. Shapefile .shp A file used for storing the geometric location and attribute information of geographic features.

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