Introduction

In this chapter, we'll programmatically create dynamic maps using Python to control every aspect of the QGIS map canvas. We'll learn to dynamically apply symbology from data in a CSV file. We'll also learn how to use some newer QGIS custom symbology, including font markers, arrow symbols, null symbols, and the powerful new 2.5D renderer for buildings. We'll use labels and map bookmarks. We'll learn the new way in which QGIS handles map services, which formerly required a plugin. We'll also go beyond the canvas to create custom map tools. You will see that every aspect of QGIS is up for grabs with Python, to write your own application. Sometimes, the PyQGIS API may not directly support your application goal, but there is nearly always a way to accomplish what you set out to do with QGIS.