svf edge effect #91
Description
in the current implementation, there is sky view fraction (svf) is treated equally in middle of the spatial domain than on the edge. The current method relies on the funtion viewf from TopoCalc.
How to alleviate svf computation at the DEM edge:
- ask for a larger DEM extent (+20km each side) and crop it for the rest of the computation
- ask for two DEMs. One for svf and one for the ROI
- provide a large extent DEM of lower spatial resolution to estimate svf at the edge
- any other method
But first we'd need to quantify the error due to this potential edge effect!