June 2017
Beginner
428 pages
10h 2m
English
Content preview from Practical GIS
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Proximity analysis with rasters
The easiest way to carry out a proximity analysis using rasters is GDAL's Proximity tool in QGIS. The tool requires a raster layer where features are described by cell values greater than zero. It takes the input raster, and creates the proximity grid--a raster with the same extent and resolution filled with distances from cells with values greater than zero. The behavior of the Proximity tool implies the following two things:
- We need to rasterize our input features
- We need to supply our rasterized features in a raster map covering our study area
As we've already found out, we can supply an existing raster layer to the Rasterize tool:
- Select one of the factor inputs (like waterways, mean_coordinates, and ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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