Book Image

Mastering Geospatial Development with QGIS 3.x - Third Edition

By : Shammunul Islam, Simon Miles, Kurt Menke, GISP, Richard Smith Jr., GISP, Luigi Pirelli, John Van Hoesen, GISP
Book Image

Mastering Geospatial Development with QGIS 3.x - Third Edition

By: Shammunul Islam, Simon Miles, Kurt Menke, GISP, Richard Smith Jr., GISP, Luigi Pirelli, John Van Hoesen, GISP

Overview of this book

QGIS is an open source solution to GIS and widely used by GIS professionals all over the world. It is the leading alternative to proprietary GIS software. Although QGIS is described as intuitive, it is also, by default, complex. Knowing which tools to use and how to apply them is essential to producing valuable deliverables on time. Starting with a refresher on the QGIS basics and getting you acquainted with the latest QGIS 3.6 updates, this book will take you all the way through to teaching you how to create a spatial database and a GeoPackage. Next, you will learn how to style raster and vector data by choosing and managing different colors. The book will then focus on processing raster and vector data. You will be then taught advanced applications, such as creating and editing vector data. Along with that, you will also learn about the newly updated Processing Toolbox, which will help you develop the advanced data visualizations. The book will then explain to you the graphic modeler, how to create QGIS plugins with PyQGIS, and how to integrate Python analysis scripts with QGIS. By the end of the book, you will understand how to work with all aspects of QGIS and will be ready to use it for any type of GIS work.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

Summary


In this chapter, we covered automating workflows with the QGIS graphical modeler. We showed you how to set up, edit, document, and run a model. You learned how to add inputs and algorithms to models. We also covered how to execute models iteratively, nest models within models, and run them in batch mode. With what has been covered up to this point, you should understand how to work with a variety of vector, raster, and tabular data. You should also be well-versed in the geoprocessing and analytical capabilities of QGIS.

In the next chapter, we will switch from conducting analyses with the graphical modeler and the Processing Toolbox to expanding the functionality of QGIS with Python. In Chapter 10, Creating QGIS Plugins with PyQGIS and Problem Solving, you will learn how to create a QGIS plugin from scratch. The chapter will begin with a primer on PyQGIS. You'll learn where you can get API information and other PyQGIS help. We will then explore the plugin file structure and the available...