September 2016
Beginner to intermediate
486 pages
10h 56m
English
book
Mastering QGIS - Second Edition
by Kurt Menke, GISP, Paolo Corti, Richard Smith Jr., GISP, Luigi Pirelli, John Van Hoesen, GISP
Content preview from Mastering QGIS - Second Edition
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Executing model algorithms iteratively
Models, like all QGIS algorithms, can be executed iteratively. Here, we will demonstrate this feature with one of the QGIS example models: DEMs_Clipped_to_Watersheds.model. We will use two inputs, a DEM covering Taos, New Mexico and a watersheds polygon layer for the area. The elevation.tif and watersheds.shp sample data will be used:
Input data: watersheds and a DEM
The model has just one algorithm. It uses the Clip grid with polygon tool to clip the DEM to watersheds. There are 21 watersheds covering this area:
If the model is run normally, it will clip the DEM to the extent of all 21 watersheds and produce ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.