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ArcPy and ArcGIS: Geospatial Analysis with Python

You're reading from   ArcPy and ArcGIS: Geospatial Analysis with Python Use the ArcPy module to automate the analysis and mapping of geospatial data in ArcGIS

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Product type Paperback
Published in Feb 2015
Publisher
ISBN-13 9781783988662
Length 224 pages
Edition 1st Edition
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Toc

Table of Contents (14) Chapters Close

Preface 1. Introduction to Python for ArcGIS FREE CHAPTER 2. Configuring the Python Environment 3. Creating the First Python Script 4. Complex ArcPy Scripts and Generalizing Functions 5. ArcPy Cursors – Search, Insert, and Update 6. Working with ArcPy Geometry Objects 7. Creating a Script Tool 8. Introduction to ArcPy.Mapping 9. More ArcPy.Mapping Techniques 10. Advanced Geometry Object Methods 11. Network Analyst and Spatial Analyst with ArcPy 12. The End of the Beginning Index

Inspecting and replacing layer sources


The first and most important arcpy.mapping module use is to identify and fix the broken links between layers in a map document and their data sources. Layer symbology and GIS data storage are separated, meaning that layer data sources are often moved. Arcpy.mapping offers a quick solution, though imperfect.

This solution depends on a number of methods included in the arcpy.mapping module. First, we will need to identify the broken links, and then we will fix them. To identify the broken links we will use the ListBrokenDataSources() method included in arcpy.mapping.

The ListBrokenDataSources() method requires an MXD path to be passed to the MapDocument() method of arcpy.mapping. Once the map document object has been created, it is passed to the ListBrokenDataSources() method, and a list will be generated containing layer objects, one for each layer with a broken link. The layer objects have a number of properties available to them. Using these properties...

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