9B: Automating Complex Workflows using Processing Modeler

Practical No.9(B): Automating Complex Workflows using Processing Modeler

Version Used: QGIS 2.8.1

Under Processing:
1)Toolbox: Change from Simplified Interface to Advanced Interface
2)Graphical Modeler

Steps for workflow:
Raster Layer(Input)
|
Majority Filter
|
Polygonize(raster to vector) OR Class
|
Extract by attribute
|
vectorized_class

Applying workflow on the following files:

Output:
Difference between 2001 and 2012