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.
Table of Contents (13 chapters)
Introduction to ArcGIS Online

ArcPy Cursors - Search, Insert, and Update

Now that you understand how to interact with ArcToolbox tools using ArcPy, you will have a basic understanding of how to improve GIS work flows using Python. In this chapter, we will cover data cursors and the data access module introduced in ArcGIS 10.1.

Data cursors are used to access data records contained within data tables, using a row-by-row iterative approach. The concept was imported from relational databases, where data cursors are used to extract data from tables returned from an SQL expression. Cursors are used not only to search for data, but also to update data, or to add new data.

When we discuss creating data searches using ArcPy cursors, we are not just talking about attribute information. The new data access model cursors can interact directly with the shape field, and when combined with ArcPy Geometry objects, can perform...