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Python Geospatial Analysis Cookbook

You're reading from   Python Geospatial Analysis Cookbook Over 60 recipes to work with topology, overlays, indoor routing, and web application analysis with Python

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Product type Paperback
Published in Nov 2015
Publisher
ISBN-13 9781783555079
Length 310 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (15) Chapters Close

Preface 1. Setting Up Your Geospatial Python Environment FREE CHAPTER 2. Working with Projections 3. Moving Spatial Data from One Format to Another 4. Working with PostGIS 5. Vector Analysis 6. Overlay Analysis 7. Raster Analysis 8. Network Routing Analysis 9. Topology Checking and Data Validation 10. Visualizing Your Analysis 11. Web Analysis with GeoDjango A. Other Geospatial Python Libraries
B. Mapping Icon Libraries
Index

Batch setting the projection definition of a folder full of Shapefiles

Working with one Shapefile is fine but working with tens or hundreds of files is something else. In such a scenario, we'll need automation to get a job done fast.

We have a folder that contains several Shapefiles that are all in the same coordinate system but do not have a .prj file. We want to create a .prj file for each Shapefile in the current directory.

This script is a modified version of the previous code example that could write a .prj file for a single Shapefile into a batch process that can run over several Shapefiles.

How to do it...

We have a folder with many Shapefiles and we would like to create a new .prj file for each Shapefile in this folder, so let's get started:

  1. Create a new Python file named ch02_05_batch_shp_prj.py in your /ch02/code/working/ directory and add the following code:
    #!/usr/bin/env python
    # -*- coding: utf-8 -*-
    
    import urllib
    import os
    from osgeo import osr
    
    
    def create_epsg_wkt_esri...
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