Book Image

ArcPy and ArcGIS - Second Edition

By : Silas Toms, Dara OBeirne
Book Image

ArcPy and ArcGIS - Second Edition

By: Silas Toms, Dara OBeirne

Overview of this book

ArcGIS allows for complex analyses of geographic information. The ArcPy module is used to script these ArcGIS analyses, providing a productive way to perform geo-analyses and automate map production. The second edition of the book focuses on new Python tools, such as the ArcGIS API for Python. Using Python, this book will guide you from basic Python scripting to advanced ArcPy script tools. This book starts off with setting up your Python environment for ArcGIS automation. Then you will learn how to output maps using ArcPy in MXD and update feature class in a geodatabase using arcpy and ArcGIS Online. Next, you will be introduced to ArcREST library followed by examples on querying, updating and manipulating ArcGIS Online feature services. Further, you will be enabling your scripts in the browser and directly interacting with ArcGIS Online using Jupyter notebook. Finally, you can learn ways to use of ArcPy to control ArcGIS Enterprise and explore topics on deployments, data quality assurances, data updates, version control, and editing safeguards. By the end of the book, you will be equipped with the knowledge required to create automated analysis with administration reducing the time-consuming nature of GIS.

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Table of Contents (13 chapters)
Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
Introduction to Python for ArcGIS
Introduction to Python for ArcGIS
Python as a programming language
The basics of Python programming
Data types
Other important concepts
Important Python modules
How Python executes a script
Integrated Development Environments (IDEs)
Python folder structure
Summary
2
Creating the First Python Script
Creating the First Python Script
Prerequisites
ModelBuilder
Exporting the model and adjusting the script
String manipulation
The ArcPy tools
The final script
Summary
3
ArcPy Cursors - Search, Insert, and Update
ArcPy Cursors - Search, Insert, and Update
Python functions – avoid repeating code
The data access module
Summary
4
ArcPy Geometry Objects and Cursors
ArcPy Geometry Objects and Cursors
ArcPy geometry object classes
Summary
5
Creating a Script Tool
Creating a Script Tool
Adding dynamic parameters to a script
Creating a script tool
Inspecting the final script
Summary
6
The arcpy.mapping Module
The arcpy.mapping Module
Using ArcPy with map documents
Summary
7
Advanced Analysis Topics
Advanced Analysis Topics
Using Network Analyst
The Network Analyst module
Accessing the Spatial Analyst extension
Summary
8
Introduction to ArcGIS Online
Introduction to ArcGIS Online
ArcGIS Online
Summary
9
ArcPy and ArcGIS Online
ArcPy and ArcGIS Online
ArcGIS Online REST services
URL parameters
Feature sets
ArcGIS Online tokens
Putting it all together
Summary
10
ArcREST Python Package
ArcREST Python Package
Introducing the ArcREST module
ArcGIS Online administration
Querying hosted feature services
Summary
11
ArcPy and ArcGIS Pro
ArcPy and ArcGIS Pro
Introducing ArcGIS Pro
Installing and configuring ArcGIS Pro
The ArcGIS Pro Python window
Python 2.7 and Python 3.5 with ArcPro
Conda and ArcGIS Pro
Reviewing Conda basics
Summary
12
ArcGIS API for Python
ArcGIS API for Python
Introduction to the ArcGIS API for Python
Creating a Jupyter Notebook
Starting the ArcGIS API for Python
Adding an item to a web map
Importing a CSV with pandas
Summary

Exporting the model and adjusting the script

While modeling analysis in ModelBuilder has its drawbacks, there is one fantastic option built into ModelBuilder: the ability to create a model, and then export the model to Python. Along with the ArcGIS Help Documentation, it is the best way to discover the correct Python syntax to use when writing ArcPy scripts.

Create a folder that can hold the exported scripts next to the SanFrancisco geodatabase (for example, C:\\ProjectsScripts). This will hold both the exported scripts that ArcGIS automatically generates, and the versions that we will build from those generated scripts. Now, perform the following steps:

  1. Open up the model called Chapter2Model1.
  2. Click on the Model menu in the upper-left side of the screen.
  3. Select Export from the menu.
  4. Select To Python Script.
  5. Save the script as Chapter2Model1.py.
Note that there is also the option...
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