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Learning Geospatial Analysis with Python - Third Edition
book

Learning Geospatial Analysis with Python - Third Edition

by Joel Lawhead
September 2019
Beginner content levelBeginner
456 pages
10h 53m
English
Packt Publishing
Content preview from Learning Geospatial Analysis with Python - Third Edition

Creating a triangulated irregular network

The following example is our most sophisticated example yet. A triangulated irregular network (TIN) is a vector representation of a point dataset in a vector surface of points connected as triangles. An algorithm determines which points are absolutely necessary to accurately represent the terrain as opposed to a raster, which stores a fixed number of cells over a given area and may repeat elevation values in adjacent cells that could be more efficiently stored as a polygon.

A TIN can also be resampled more efficiently on the fly than a raster, which requires less computer memory and processing power when using TIN in a GIS. The most common type of TIN is based on Delaunay triangulation, which includes ...

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Publisher Resources

ISBN: 9781789959277Supplemental Content