I was wondering if anyone had any ideas - For my dissertation I am trying to apply the revised universal soil loss equation to a catchment using arcMAP. One of the parameters I have to calculate is the LS Factor (Slope Length/Slope Steepness Factor) which involves:
Filling 5x5 DEM using the "fill" tool
Using "Flow Accumulation" tool
Using "Flow Direction" tool
Using the depressionless DEM to calculate slope using the "slope" tool
I then use the following equation in raster calculator: Power("FlowAccumulation" * cell size/ 22.13,0.4) * Power((Sin("slope") / 0.0896,1.3)
This all looks fine and good, apart from the fact there are large noData gaps in my resulting layer. I tried running the code written by Van Remortel et al 2004, but it produced exactly the same result! My DEM has no Nodata areas so I was wondering if anybody has any ideas what I can do to solve this problem?