The graphical modeler provides a wonderful functionality in QGIS that helps us to automate repetitive tasks in QGIS. Suppose we want to clip a raster file according to a shapefile. The steps for this clipping for different sets of rasters and vector files would require us to repeat the same number of steps again and again for different combinations. We can reduce our workload by using a graphical modeler.
Here, we will clip the LC08_L1TP_137043_20180410_20180417_01_T1_B2.TIF raster file by the gazipur shapefile. Let's see how they look by loading them into QGIS:
The Graphical Modeler can be accessed under Processing:
