Extract valleys — wbt_extract_valleys • whitebox

Identifies potential valley bottom grid cells based on local topolography alone.

Usage

wbt_extract_valleys(
  dem,
  output,
  variant = "LQ",
  line_thin = TRUE,
  filter = 5,
  wd = NULL,
  verbose_mode = NULL,
  compress_rasters = NULL,
  command_only = FALSE
)

Arguments

dem: Input raster DEM file.
output: Output raster file.
variant: Options include 'LQ' (lower quartile), 'JandR' (Johnston and Rosenfeld), and 'PandD' (Peucker and Douglas); default is 'LQ'.
line_thin: Optional flag indicating whether post-processing line-thinning should be performed.
filter: Optional argument (only used when variant='lq') providing the filter size, in grid cells, used for lq-filtering (default is 5).
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.