split_catchment_divide: Split Catchment Divides

In dblodgett-usgs/hyRefactor: Hydrologic Network Refactoring Tools Based on HY_Features

Split Catchment Divides

Description

A catchment-divide splitting algorithm that works with a D8 flow direction grid and the output of nhdplus_refactor. See Vignette for examples.

Usage

split_catchment_divide(
  catchment,
  fline,
  fdr,
  fac,
  lr = FALSE,
  min_area_m = 800,
  snap_distance_m = 100,
  simplify_tolerance_m = 40,
  vector_crs = NULL
)

Arguments

catchment	sf data.frame with one catchment divide
fline	sf data.frame with one or more flowline segments in upstream downstream order.
fdr	character path to flow direction that fully covers the catchment
fac	character path to flow accumulation that fuller covers the catchment
lr	boolean should catchments be split along the left/right bank?
min_area_m	minimum area in m^2 to filter out slivers (caution, use with care!!)
snap_distance_m	distance in meters to snap SpatRaster generated geometry to polygon geometry
simplify_tolerance_m	dTolerance in meters for simplification of grid-cell based polygons
vector_crs	any object compatible with sf::st_crs. Used for vector-based calculations in case that fdr projection is not suitable (e.g. lon/lat) – must result in units of meters.

Value

Split catchment divides as an sfc geometry.

dblodgett-usgs/hyRefactor documentation built on Aug. 25, 2023, 9:09 p.m.