I want to measure surface volume of an area in different elevation layer.
For measuring the surface volume I have to make a Polygon Volume as well. I have problem with making this polygon over the TIN layer and define the different elevation for it ? Like the link below:
for example I have a TIN surface which min contour is 25 m and max contour is 140 , then I want to measure all the surface above 25 m , 35 m and ... ! I just wonder how to make this polygon on top?