drainage_preserving_smoothing: Drainage preserving smoothing

In whitebox: 'WhiteboxTools' R Frontend

Description

Reduces short-scale variation in an input DEM while preserving breaks-in-slope and small drainage features using a modified Sun et al. (2007) algorithm.

Usage

drainage_preserving_smoothing(dem, output, filter = 11, norm_diff = 15,
  num_iter = 3, max_diff = 0.5, reduction = 80, dfm = 0.15,
  zfactor = 1, verbose_mode = FALSE)

Arguments

dem	Input raster DEM file.
output	Output raster file.
filter	Size of the filter kernel.
norm_diff	Maximum difference in normal vectors, in degrees.
num_iter	Number of iterations.
max_diff	Maximum allowable absolute elevation change (optional).
reduction	Maximum Amount to reduce the threshold angle by (0 = full smoothing; 100 = no smoothing).
dfm	Difference from median threshold (in z-units), determines when a location is low-lying.
zfactor	Optional multiplier for when the vertical and horizontal units are not the same.
verbose_mode	Sets verbose mode. If verbose mode is False, tools will not print output messages.

Value

Returns the tool text outputs.

whitebox documentation built on Sept. 7, 2020, 3 p.m.