In this chapter, we will explore the structure of the QGIS Processing Toolbox and identify which algorithm providers are available, and how to use these specialized algorithms. To accomplish these goals, we will ensure that the Toolbox is properly configured, use a variety of specialized vector and spatial algorithms from the Geographical Resources Analysis Support System (GRASS) and System for Automated Geoscientific Automation (SAGA) libraries, and perform hydrologic analyses using the SAGA library. We will cover the following topics in this chapter:
- Introducing the Processing Toolbox
- What's new in the Processing Toolbox?
- Viewing the Processing Toolbox
- Configuring the Processing Toolbox
- Using the Processing Toolbox
- Performing raster analysis with GRASS
- Performing analysis using SAGA
- Exploring hydrologic analysis with SAGA