Slope Average Down
(c) 2010 by David G. Tarboton
This tool computes slope in a D8 downslope direction
averaged over a user selected distance. Distance should be specified in
horizontal map units.
Parameters
- Number of Processes
Integer
- The number of stripes that the domain will be divided into and the
number of MPI parallel processes that will be spawned to evaluate each
of the stripes.
- D8 Flow Direction Grid
Raster Grid
- This input is a grid of flow directions that are encoded using the
D8 method where all flow from a cells goes to a single neighboring cell
in the direction of steepest descent.This grid can be obtained as the
output of the "D8 Flow Directions" tool.
- Pit Filled Elevation Grid
Raster Grid
- This input is a grid of elevation values. As a general rule, it is
recommended that you use a grid of elevation values that have had the
pits removed for this input. Pits are generally taken to be artifacts
that interfere with the analysis of flow across them. This grid can be
obtained as the output of the "Pit Remove" tool, in which case
it contains elevation values where the pits have been filled to the
point where they just drain.
- Downslope Distance
Double
- Input parameter of downslope distance over which to calculate the
slope (in horizontal map units). Default 50.
Outputs
- Slope Average Down Grid
Raster Grid
- This output is a grid of slopes calculated in the D8 downslope
direction, averaged over the selected distance.