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Identifies ground points within LiDAR dataset using a slope-based method.

Usage

wbt_lidar_ground_point_filter(
  input,
  output,
  radius = 2,
  min_neighbours = 0,
  slope_threshold = 45,
  height_threshold = 1,
  classify = TRUE,
  slope_norm = TRUE,
  height_above_ground = FALSE,
  wd = NULL,
  verbose_mode = NULL,
  compress_rasters = NULL,
  command_only = FALSE
)

Arguments

input

Input LiDAR file.

output

Output LiDAR file.

radius

Search Radius.

min_neighbours

The minimum number of neighbouring points within search areas. If fewer points than this threshold are identified during the fixed-radius search, a subsequent kNN search is performed to identify the k number of neighbours.

slope_threshold

Maximum inter-point slope to be considered an off-terrain point.

height_threshold

Inter-point height difference to be considered an off-terrain point.

classify

Classify points as ground (2) or off-ground (1).

slope_norm

Perform initial ground slope normalization?.

height_above_ground

Transform output to height above average ground elevation?.

wd

Changes the working directory. Default: NULL will use the value in WhiteboxTools settings, see wbt_wd() for details.

verbose_mode

Sets verbose mode. If verbose mode is FALSE, tools will not print output messages. Default: NULL will use the value in WhiteboxTools settings, see wbt_verbose() for details.

compress_rasters

Sets the flag used by 'WhiteboxTools' to determine whether to use compression for output rasters. Default: NULL will use the value in WhiteboxTools settings, see wbt_compress_rasters() for details.

command_only

Return command that would be executed by system() rather than running tool. Default: FALSE.

Value

Returns the tool text outputs.