GGS-311_-_Lecture6(2)

GGS-311_-_Lecture6(2) - Geographic Data Modeling Longley...

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Unformatted text preview: Geographic Data Modeling Longley Chapter 8 Dr. Matt Rice Geography and Geoinformation Science 311 Fall 2011 Outline • Definitions • Data models / modeling • GIS data models – Topology • Example – Water facilities Definitions • Data model – set of constructs for representing objects and processes in the digital environment • Representation – Focus on conceptual and scientific issues Role of a Data Model Levels of Data Model Abstraction Two representations of San Diego, California: (A) panchromatic SPOT raster satellite image collected in 1990 at 10 m resolution; (B) vector objects digitized from the image. GIS Data Models & Applications • CAD • Graphical • Image • Raster/Grid • Network • Geo-relational • TIN • Object • Engineering design • Simple mapping • Image processing and analysis • Spatial analysis / modeling • Network analysis • Geoprocessing geometric features • Surface /terrain analysis / modeling • Features with behavior Raster and Vector Models...
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This note was uploaded on 01/23/2012 for the course GGS 311 taught by Professor Dr.rice during the Fall '11 term at George Mason.

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GGS-311_-_Lecture6(2) - Geographic Data Modeling Longley...

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