I am trying to extract the area of a catchment against Elevation (in classes) [screenshot attached below]
The steps I used are:
- Clip the catchment area from DEM
- Classify the area in 20 classes
- Raster to polygon
- Merge based on gridcode
The problem is I find the only 3-4 values of shape area which are repeating as you can see in Shape_Area. I am confused what could be reason.
Is it due to some resolution of DEM or anything else?