Book Image

Learn QGIS - Fourth Edition

By : Andrew Cutts, Anita Graser
Book Image

Learn QGIS - Fourth Edition

By: Andrew Cutts, Anita Graser

Overview of this book

QGIS 3.4 is the first LTR (long term release) of QGIS version 3. This is a giant leap forward for the project with tons of new features and impactful changes. Learn QGIS is fully updated for QGIS 3.4, covering its processing engine update, Python 3 de-facto coding environment, and the GeoPackage format. This book will help you get started on your QGIS journey, guiding you to develop your own processing pathway. You will explore the user interface, loading your data, editing, and then creating data. QGIS often surprises new users with its mapping capabilities; you will discover how easily you can style and create your first map. But that’s not all! In the final part of the book, you’ll learn about spatial analysis and the powerful tools in QGIS, and conclude by looking at Python processing options. By the end of the book, you will have become proficient in geospatial analysis using QGIS and Python.
Table of Contents (8 chapters)

Getting to know the Python console

The most direct way to interact with the QGIS application programming interface (API) is through the Python console, which can be opened by going to Plugins | Python Console. Alternatively, this can be done by clicking on the Python icon in the plugins toolbar. The Python Console is displayed within a new panel below the map, as demonstrated in the following screenshot:

The Python Console

The access point for interaction with the application, project, and data is the iface object. To get a list of all the functions available for iface, type help (iface).

This information is available online in the API documentation at Please also visit the dedicated Python API documentation at