D8 Flow Directions

D8 Flow Directions

Usage

taudem_d8flowdir(
  input_elevation_grid,
  output_d8flowdir_grid = NULL,
  output_d8slopes_grid = NULL,
  n_processes = getOption("traudem.n_processes", 1),
  quiet = getOption("traudem.quiet", FALSE)
)

Arguments

input_elevation_grid

Pit filled elevation input data.

output_d8flowdir_grid

D8 flow directions output.

output_d8slopes_grid

D8 slopes output.

n_processes

Number of processes for mpiexec. If NULL TauDEM is called without mpiexec.

quiet

If FALSE output from TauDEM CLI is suppressed.

Value

List with the two output filenames.

Details

See https://hydrology.usu.edu/taudem/taudem5/help53/D8FlowDirections.html

Examples

if (FALSE) { # interactive() && traudem::can_register_taudem()
test_dir <- withr::local_tempdir()
dir.create(test_dir)
 file.copy(
   system.file("test-data", "DEM.tif", package = "traudem"),
   file.path(test_dir, "DEM.tif")
 )
filled_pit <- taudem_pitremove(file.path(test_dir, "DEM.tif"))
outputs <- taudem_d8flowdir(filled_pit)
outputs
}