Extract Valley Networks from dtm — extract

Wrapper function for extracting valley networks. See extract_networks() for details.

Usage

extract_valleys(
  dtm,
  metrics,
  output_folder = NULL,
  smooth_valleys = TRUE,
  plot_result = FALSE,
  cleanup = TRUE
)

dtm: A SpatRaster object (from terra package) representing the digital elevation model
metrics: A list containing pre-calculated geomorphometric metrics from calc_geomorph_metrics(). This parameter is REQUIRED. For valleys: Must contain flow_pointer and streams For ridges: Must contain flow_pointer_inverted and streams_inverted
output_folder: Path to folder for temporary whitebox processing files. Defaults to a temporary directory.
smooth_valleys: Logical. Should valley lines be smoothed? Default is TRUE.
plot_result: Logical. Should the result be plotted? Default is FALSE.
cleanup: Logical. Should temporary files be removed after processing? Default is TRUE.

An sf object containing valley line geometries with length attribute