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

Using live layer effects


You can make stunning visuals using live layer effects. From the Style tab of Layer Properties, you can enable this feature by clicking Draw effects in the Layer Rendering section, as seen here:

Once the Draw effects feature has been enabled, the Customize effects button is also enabled.

Click the Customize effects yellow star button to open the Effect Properties window shown here:

The Effect type dropdown gives you access to eight different effects. For most of these, transparency, blending modes, and draw modes are customizable. The available effects are as follows:

  • Blur: Creates a blurred version of the feature.
  • Colorise: Allows you to change the color of the feature using brightness, contrast, and saturation sliders along with transparency, blending modes, and draw modes.
  • Source: The original feature style.
  • Drop Shadow: Creates a drop shadow around a feature. The sun angle (offset), shadow length, blur radius, transparency, and color are adjustable.
  • Inner Glow: Creates...