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PostGIS Cookbook

You're reading from   PostGIS Cookbook Store, organize, manipulate, and analyze spatial data

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Product type Paperback
Published in Mar 2018
Publisher
ISBN-13 9781788299329
Length 584 pages
Edition 2nd Edition
Languages
Tools
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Authors (6):
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Pedro Wightman Pedro Wightman
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Pedro Wightman
Bborie Park Bborie Park
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Bborie Park
Paolo Corti Paolo Corti
Author Profile Icon Paolo Corti
Paolo Corti
Stephen Vincent Mather Stephen Vincent Mather
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Stephen Vincent Mather
Thomas Kraft Thomas Kraft
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Thomas Kraft
Mayra Zurbarán Mayra Zurbarán
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Mayra Zurbarán
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Toc

Table of Contents (14) Chapters Close

Preface 1. Moving Data In and Out of PostGIS FREE CHAPTER 2. Structures That Work 3. Working with Vector Data – The Basics 4. Working with Vector Data – Advanced Recipes 5. Working with Raster Data 6. Working with pgRouting 7. Into the Nth Dimension 8. PostGIS Programming 9. PostGIS and the Web 10. Maintenance, Optimization, and Performance Tuning 11. Using Desktop Clients 12. Introduction to Location Privacy Protection Mechanisms 13. Other Books You May Enjoy

Working with GPS data


In this recipe, you will work with GPS data. This kind of data is typically saved in a .gpx file. You will import a bunch of .gpx files to PostGIS from RunKeeper, a popular social network for runners.

If you have an account on RunKeeper, you can export your .gpx files and process them by following the instructions in this recipe. Otherwise, you can use the RunKeeper .gpx files included in the runkeeper-gpx.zip file located in the chp03 directory available in the code bundle for this book.

You will first create a bash script for importing the .gpx files to a PostGIS table, using ogr2ogr. After the import is completed, you will try to write a couple of SQL queries and test some very useful functions, such as ST_MakeLine to generate polylines from point geometries, ST_Length to compute distance, and ST_Intersects to perform a spatial join operation.

Getting ready

Extract the data/chp03/runkeeper-gpx.zip file to working/chp03/runkeeper_gpx. In case you haven't been through...

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