Tutorial: Automate Stream & Catchment Delineation using the Graphical Modeller
نیازمندیهای تکمیل
1. Introduction
QGIS has some great ways to automate your processes. You can use PyQGIS to build scripts. But if you're looking for a more graphical way, the Graphical Modeller is a great way to automate your processes using the tools from the Processing Toolbox.
After this tutorial you're able to:
- Define input layers and variables for your graphical model
- Add processing tools to your graphical model
- Save results of your graphical model
- Save your graphical model to the Processsing Toolbox
- Create a graphical model for stream delineation
- Create a graphical model for catchment delineation
In
this tutorial we'll make two models that you can apply to any area for
which you have downloaded SRTM data and created a bounding box polygon
of the study area. For this tutorial the data is provided.
Here we use QGIS 3.14 Pi, but the procedure is similar in 3.10 LTR.