Transcription of INTRODUCTION: BASIC GEOGRAPHIC CONCEPTS
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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?
CAD is used for computerized drafting. Many CAD systems also provide more advanced features like solid modeling and simulation. CAD generally lacks topology of objects and direct links to an attribute database, which are essential features in GIS modeling and analysis operations.
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