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)

Interacting with data

When you loaded the Alaska layer, you probably noticed that the data appeared as a relatively small object. In this section, we will cover some of the basic interactions we can perform with data. Let's start with zooming in.


Later, we will show you how to zoom in on a layer to look at it in more detail. But first, let's remind ourselves of the project and navigation toolbar:

Project and Navigation toolbar

These tools are the workhorse of the GIS. They allow us to move around, inspect, measure, and select data. All are critical in any GIS, and if you have used mapping software before, you should be familiar with them.

Start by clicking on the zoom-in icon (a magnifying glass icon...