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Learn QGIS

By : Cutts, Anita Graser

2 (1)

Buy this Book

Learn QGIS

2 (1)

By: Cutts, Anita Graser

Buy this Book

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.

Preface

Who this book is for

What this book covers

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Free Chapter

Where Do I Start?

Installing QGIS 3.4

Running QGIS for the first time

What is new in QGIS 3

Introducing the QGIS user interface

Finding help and reporting issues

Summary

Data Creation and Editing

Data formats

Loading data

Interacting with data

Vector data

Raster data

Other data

Summary

Visualizing Data

Styling data

Styling raster layers

Saving styles

Styling vector layers

Summary

Creating Great Maps

Communicating with data

Labeling

Creating a map

Loading data

Summary

Spatial Analysis

Processing toolbox

Analyzing raster data

Combining raster and vector data

Advanced vector and raster analysis with processing

Summary

Extending QGIS with Python

Adding functionality using actions

Getting to know the Python console

Creating custom geoprocessing scripts using Python

Developing your first plugin

3D view

Summary

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Advanced vector and raster analysis with processing

In the following sections, we will cover more advanced processing tools and see how we can use the modeler to automate our tasks.

Finding nearest neighbors

Finding nearest neighbors – for example, the airport nearest to a populated place – is a common task in geoprocessing.

To do this, load the popp.shp into QGIS as well as the airports.shp, if this is not already loaded. Then search for the Distance to Nearest Hub tool (Line to Hub) in the toolbox. You should use the popp.shp as the Source points layer and the airports as the Destination hubs layer. The Hub layer name attribute will be added to the results attribute table to identify the nearest feature. Select...