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QGIS 2 Cookbook

You're reading from   QGIS 2 Cookbook Become a QGIS power user and master QGIS data management, visualization, and spatial analysis techniques

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Product type Paperback
Published in Apr 2016
Publisher
ISBN-13 9781783984961
Length 390 pages
Edition 1st Edition
Tools
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Authors (3):
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Anita Graser Anita Graser
Author Profile Icon Anita Graser
Anita Graser
Víctor Olaya Ferrero Víctor Olaya Ferrero
Author Profile Icon Víctor Olaya Ferrero
Víctor Olaya Ferrero
Alex Mandel Alex Mandel
Author Profile Icon Alex Mandel
Alex Mandel
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Toc

Table of Contents (14) Chapters Close

Preface 1. Data Input and Output 2. Data Management FREE CHAPTER 3. Common Data Preprocessing Steps 4. Data Exploration 5. Classic Vector Analysis 6. Network Analysis 7. Raster Analysis I 8. Raster Analysis II 9. QGIS and the Web 10. Cartography Tips 11. Extending QGIS 12. Up and Coming Index

Automating multiple route computation using batch processing


If you have multiple input point layers, you can use Processing's batch processing capabilities to speed up the process. In this recipe, we will compute routes for two input point layers at once, but the same approach can be applied to many more layers.

Getting ready

To follow this recipe, load network_pgr.shp and the two point layers, sample_pts_for_routing.shp and sample_pts_for_routing2.shp.

How to do it…

To get started, right-click on the point layer to route tool in the Processing Toolbox option and select Execute as batch process. Then perform the following steps:

  1. In the points column, click the button and use the Select from open layers option to select sample_pts_for_routing and sample_pts_for_routing2.

  2. Select and remove the third line using the Delete row button at the bottom of the dialog.

  3. In the network column, click the button and use the Select from open layers option to select network_pgr. You can avoid having to pick...

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