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  • Book Overview & Buying ArcPy and ArcGIS: Geospatial Analysis with Python
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ArcPy and ArcGIS: Geospatial Analysis with Python

ArcPy and ArcGIS: Geospatial Analysis with Python

By : Silas Toms
3.9 (11)
Buy this Book
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ArcPy and ArcGIS: Geospatial Analysis with Python

ArcPy and ArcGIS: Geospatial Analysis with Python

3.9 (11)
By: Silas Toms
Buy this Book

Overview of this book

If you are a GIS student or professional who needs an understanding of how to use ArcPy to reduce repetitive tasks and perform analysis faster, this book is for you. It is also a valuable book for Python programmers who want to understand how to automate geospatial analyses.
Table of Contents (14 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
Free Chapter
1
1. Introduction to Python for ArcGIS
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1. Introduction to Python for ArcGIS
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Overview of Python
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Python as a programming language
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Important Python Modules for GIS Analysis
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Summary
2
2. Configuring the Python Environment
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2. Configuring the Python Environment
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What is a Python script?
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What is the Python interpreter?
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Make Python scripts executable when clicked on
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Integrated Development Environments (IDEs)
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Python folder structure
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The sys.path.append() method
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Summary
3
3. Creating the First Python Script
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3. Creating the First Python Script
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Prerequisites
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Creating a model and exporting to Python
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Exporting the model and adjusting the script
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File paths in Python
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Continuing the script analysis: the ArcPy tools
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Adjusting the Script
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Adding the CSV module to the script
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The final script
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Summary
4
4. Complex ArcPy Scripts and Generalizing Functions
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4. Complex ArcPy Scripts and Generalizing Functions
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Python functions–Avoid repeating code
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Summary
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5. ArcPy Cursors – Search, Insert, and Update
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5. ArcPy Cursors – Search, Insert, and Update
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The data access module
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Inserting a polyline geometry
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Inserting a polygon geometry
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Summary
6
6. Working with ArcPy Geometry Objects
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6. Working with ArcPy Geometry Objects
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ArcPy geometry object classes
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Summary
7
7. Creating a Script Tool
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7. Creating a Script Tool
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Adding dynamic parameters to a script
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Creating a Script tool
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Inspecting the final script
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Summary
8
8. Introduction to ArcPy.Mapping
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8. Introduction to ArcPy.Mapping
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Using ArcPy with map documents
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Inspecting and replacing layer sources
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Automated map document adjustment
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Running the script in the Python Window
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Summary
9
9. More ArcPy.Mapping Techniques
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9. More ArcPy.Mapping Techniques
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Using arcpy.mapping to control Layer objects
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Definition queries
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Controlling the data frame window extent and scale
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Summary
10
10. Advanced Geometry Object Methods
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10. Advanced Geometry Object Methods
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Creating a Python module
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Adding advanced analysis components
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Summary
11
11. Network Analyst and Spatial Analyst with ArcPy
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11. Network Analyst and Spatial Analyst with ArcPy
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The Network Analyst extension
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Using Network Analyst
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The Network Analyst module
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Accessing the Spatial Analyst Extension
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The final result
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Summary
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12. The End of the Beginning
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12. The End of the Beginning
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Getting field information from feature classes
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Summary
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Index
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Index

Chapter 7. Creating a Script Tool

Now that the basics of creating and executing ArcPy scripts have been covered, we need to take the next step and create re-useable Script tools. Creating Script tools will allow for greater code reuse, and will make it easy to create custom tools for other GIS analysts and customers. With a Python script backend or code, and a familiar ArcGIS tool frontend or user interface, the particulars of the code are hidden from the user; it becomes just another tool, albeit a tool that can save days and weeks of work.

This chapter will cover the following topics:

  • Adding parameters to scripts to accept input and produce output as required by the user
  • Creating a custom tool frontend and a custom toolbox
  • Setting the parameters of the tool frontend to allow it to pass arguments to the code backend

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