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
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Advanced field calculations
QGIS Desktop provides powerful field-calculation functionality. In the field calculator, advanced mathematical, geometry, string, date and time, type conversion, and conditional functions are available for use. Leveraging these advanced functions along with standard operators allows for some powerful field calculations.
This section will explain the field calculator interface in detail, followed by multiple examples of advanced field calculations from a variety of functional areas. It is assumed that you know the basics of field calculations and common operators.
Exploring the field calculator interface
The field calculator can be opened in three ways, which are as follows:
- Open the attribute table of the layer whose details ...
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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.