I am currently learning SNAP toolbox. I have learnt change detection in Forest and flooding events but I want to estimate the flood affected area in SNAP toolbox itself. Is it possible or I have to use qgis or ArcMap for calculating the area?
if you delineate the flooded area with the band maths (e.g. pixel thresholding) you can as well create a mask in the Mask Manager using the same experession and then display the size of the mask as suggested here: Counting number of white pixels