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Introduction to Geographic Information Systems Spring 2013 (INF 385T-28437) Dr. David Arctur

Introduction to Geographic Information Systems Spring 2013 (INF 385T-28437) Dr. David Arctur Lecturer, Research Fellow University of Texas at Austin Lecture 5 February 7, 2013 Spatial Reference Systems, Data S ources. Outline. Models of the Earth Map projections Coordinate systems

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Ellipsoid and Datum, Projection, Coordinate system, and Map Scale

Ellipsoid and Datum, Projection, Coordinate system, and Map Scale. Lectures 4 and 5 Feb. 2 and 4, 2004. 1. Earth Shape Models. Flat earth models are still used for plane surveying, over distances short enough so that earth curvature is insignificant (less than 10 km).

603 views • 40 slides

Ellipsoid and Datum, Projection, Coordinate system, and Map Scale

Ellipsoid and Datum, Projection, Coordinate system, and Map Scale. Lectures 4 and 5 Feb. 2 and 4, 2004. 1. Earth Shape Models. Flat earth models are still used for plane surveying, over distances short enough so that earth curvature is insignificant (less than 10 km).

572 views • 40 slides

Public Land Survey System (PLSS)

Public Land Survey System (PLSS). The Public Land Survey System (PLSS) was developed by the Continental Congress to replace the common practice of describing land by metes and bounds. The PLSS is also called the Rectangular System of Land Description.

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Map Projections

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