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QGIS Python Programming Cookbook, Second Edition

You're reading from   QGIS Python Programming Cookbook, Second Edition Automating geospatial development

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781787124837
Length 464 pages
Edition 2nd Edition
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Author (1):
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Joel Lawhead Joel Lawhead
Author Profile Icon Joel Lawhead
Joel Lawhead
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Table of Contents (10) Chapters Close

Preface 1. Automating QGIS FREE CHAPTER 2. Querying Vector Data 3. Editing Vector Data 4. Using Raster Data 5. Creating Dynamic Maps 6. Composing Static Maps 7. Interacting with the User 8. QGIS Workflows 9. Other Tips and Tricks

Make a globe-like azimuthal orthographic projection

Sometimes, you want to provide a globe-like view on a static GIS map. Azimuthal orthographic projections can warp a layer containing countries to represent a round globe. In this recipe, we'll present data in one of these projections, named Sphere Azimuthal Equidistant.

Getting ready

You will need the Clip to Hemisphere plugin. Use the QGIS plugin manager to install it. The plugin will appear in the Processing Toolbox. You will also need to download the following zipped shapefile and extract it to your qgis_data directory:

https://github.com/GeospatialPython/Learn/raw/master/countries.zip

How to do it...

We are going to load the countries shapefile and clip it by centering the map on Africa and then removing the portions of the map that would be out of view on a globe. Then, we'll reproject the map to achieve the globe affect:

  1. First, we import the Processing Toolbox:
            import processing 
    
  2. Next, we'll establish the path to...
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