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Learn QGIS - Fourth Edition

You're reading from Learn QGIS - Fourth Edition

Product type Book

Published in Nov 2018

Publisher Packt

ISBN-13 9781788997423

Pages 272 pages

Edition 4th Edition

Languages

Concepts

Geospatial Analysis

Authors (2):

Andrew Cutts

Anita Graser

View More author details

Table of Contents (8) Chapters

Preface

1. Where Do I Start?

2. Data Creation and Editing

3. Visualizing Data

4. Creating Great Maps

5. Spatial Analysis

6. Extending QGIS with Python

7. Other Books You May Enjoy

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Advanced vector and raster analysis with processing

In the following sections, we will cover more advanced processing tools and see how we can use the modeler to automate our tasks.

Finding nearest neighbors

Finding nearest neighbors – for example, the airport nearest to a populated place – is a common task in geoprocessing.

To do this, load the popp.shp into QGIS as well as the airports.shp, if this is not already loaded. Then search for the Distance to Nearest Hub tool (Line to Hub) in the toolbox. You should use the popp.shp as the Source points layer and the airports as the Destination hubs layer. The Hub layer name attribute will be added to the results attribute table to identify the nearest feature. Select...

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Authors (2)

Andrew Cutts

Andrew Cutts holds a geography degree and a masters degree in GIS and has almost 20 years of experience in working with geospatial technology. He currently works as a freelance geospatial consultant. He has worked in local government, large multinational companies, and small and medium-sized enterprises. He has run a geospatial blog for almost 3 years and is a co-host of the #scenefromabove podcast. Andrew has spoken at events worldwide on GIS and Earth observation. He is a keen user of Python, especially for rapid prototyping for geospatial challenges. Currently, he is working with clients to maximize their investment with geospatial technology through direct consulting, training, and technical writing.

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Anita Graser

Anita Graser is a spatial data scientist, open source GIS advocate, and author with a background in geographic information science. She is currently working with the Center for Mobility Systems at the Austrian Institute of Technology in Vienna and teaching QGIS classes at UNIGIS Salzburg. She serves on the QGIS project steering committee. and has published several books about QGIS. Furthermore, she develops tools, such as the Time Manager plugin for QGIS. You can follow her on Twitter @underdarkGIS.

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