Calculates the Hjerdt et al. (2004) downslope index.
downslope_index(dem, output, drop = 2, out_type = "tangent",
verbose_mode = FALSE)
Input raster DEM file.
Output raster file.
Vertical drop value (default is 2.0).
Output type, options include 'tangent', 'degrees', 'radians', 'distance' (default is 'tangent').
Sets verbose mode. If verbose mode is False, tools will not print output messages.
Returns the tool text outputs.