This chapter introduces the QGIS processing framework, a geoprocessing environment that can be used to call native and third party algorithms from QGIS, making your spatial analysis tasks more productive and easy to accomplish.
In the following sections we will review how to use the graphical elements of this framework and take the most out of each one of them.
There are four basic elements in the framework GUI, which are used to run algorithms for different purposes. Choosing one tool or another will depend on the kind of analysis that is to be performed and the particular characteristics of each user and project. All of them (except for the batch processing interface, which is called from the toolbox, as we will see) can be accessed from the Processing menu item (you will see more than four entries. The remaining ones are not used to execute algorithms and will be explained later in this chapter).
Figure Processing 1:
Figure Processing 2:
Figure Processing 3:
Figure Processing 4:
Along the following sections we will review each one of this elements in detail.