Qin flow accumulation — wbt_qin_flow_accumulation • whitebox

Calculates Qin et al. (2007) flow accumulation.

Usage

wbt_qin_flow_accumulation(
  dem,
  output,
  out_type = "specific contributing area",
  exponent = 10,
  max_slope = 45,
  threshold = NULL,
  log = FALSE,
  clip = FALSE,
  wd = NULL,
  verbose_mode = NULL,
  compress_rasters = NULL,
  command_only = FALSE
)

Arguments

dem: Name of the input DEM raster file; must be depressionless.
output: Name of the output raster file.
out_type: Output type; one of 'cells', 'specific contributing area' (default), and 'catchment area'.
exponent: Optional upper-bound exponent parameter; default is 10.0.
max_slope: Optional upper-bound slope parameter, in degrees (0-90); default is 45.0.
threshold: Optional convergence threshold parameter, in grid cells; default is infinity.
log: Log-transform the output values?.
clip: Optional flag to request clipping the display max by 1 percent.
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.