Given the DEM of a certain Country, and a fishnet that is superimposed on it, I need to compute the average elevation and slope corresponding to each square in the fishnet.
[I am using ArcGIS 10.3.1, licence type: Advanced.]
The DEM is not a unique raster, but a handful of smaller maps. Their resolution is 10x10 km, whereas the fishnet squares are 2x2 km.
I tried to create a Mosaic Dataset, and then I used
Extract -> Clip from
ArcToolbox using the DEM as input features and the fishnet as clip features. I thought this wouldhave produced a unique raster map, but I was wrong, and the result is essentially a grid with the DEM resolution (10x10 km) and a bunch of table attributes which do not refer to elevation.
The intended outcome was, instead, to get the average elevation and slope for each one of the smaller tiles in the fishnet.
What is it the best strategy to achieve this?