QGIS-Python programming

This repository contains an introductory course about using Python in QGIS.

It is based on QGIS 3. If you want to use QGIS 2 instead, check the qgis2 branch of the repository

Content

Understanding Python and QGIS. A brief introduction to how Python is installed within QGIS.
The QGIS and PyQt APIs. You need to know how to use these APIs before you can write Python code to be run within QGIS.
The Python console. The first place to start exploring the QGIS API.
Expressions. How to create a custom Python expression and later use it in different places in QGIS.
Custom Python actions. React to user interaction in the canvas or attributes table.
Maptips. Custom behaviour of map tips using QGIS expressions with Python functions.
Macros. Executing Python code to respond to QGIS events.
Processing algorithms. In case the user needs to add analysis functionality, the best way to do it is to add a Processing algorithm.
Creating plugins. How to create QGIS plugins that can be later distributed and installed in other QGIS instances.