Organization of GIS themes Slide 11 of 15

Go to slide: 1: An Introduction to GIS 2: Geographic Information System 3: Data Representation 4: Map Data 5: Tabular Data 6: Tabular Data 7: GIS Analysis 8: Types of GIS 9: Geographic feature representation on maps 10: Computer representation of geographic features 11: Organization of GIS themes 12: Feature attribute tables 13: Spatial analysis operations 14: Power of GIS . . . 15: Example GIS applications

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In a GIS, real-world features are represented by points, lines, and polygons. GIS generally stores similar features in layers of themes. A layer or theme typically contains all of the same type of real-world object, represented by the same type of GIS feature (point, line, or polygon)