Based on a 15m DEM, I have created a Slope Raster, converted to polygons, calculated the slope bands and assigned a value, dissolved based on this value field and now I want to smooth the shared edges to create a better looking result.
I have tried the “Smooth” tool but end up with gaps between polygons.
I have also tried the GRASS v.generalize but when I run it on my dissolved vector polygon layer I get an empty output and multiple errors while running the tool.
I thought I could reclassify using the Raster Calculator using the following:
("Slope@1" <= 10)*10 +
("Slope@1" > 10 AND "Slope@1" <= 22)*20 +
("Slope@1" > 22)*30
I then used the “Contour to Polygon” tool with an interval of 10 which produces the following result. Its better but not exactly what I was after.
I have used the “Contour to Polygon” tool with an interval of 10 on the raw Slope raster and I get the following which is way nicer. Not not sure if I should be using it on the raw Slope Raster though considering the bands I am after are < 10, 10-22, > 22?
15m DEM
Polygon layer (raster to polygon)
