Executing model algorithms iteratively
Models, like all QGIS algorithms, can be executed iteratively. Here, we will demonstrate this feature with one of the QGIS example models: DEMs_Clipped_to_Watersheds.model. We will use two inputs, a DEM covering Taos, New Mexico and a watersheds polygon layer for the area. The elevation.tif and watersheds.shp sample data will be used:
Input data: watersheds and a DEM
The model has just one algorithm. It uses the Clip grid with polygon tool to clip the DEM to watersheds. There are 21 watersheds covering this area:
If the model is run normally, it will clip the DEM to the extent of all 21 watersheds and produce ...
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