Delineate a corridor around a river.

Delineate a corridor around a river.

Usage

delineate_corridor(
  city_name,
  river_name,
  crs = NULL,
  bbox_buffer = NULL,
  initial_method = "valley",
  initial_buffer = NULL,
  dem = NULL,
  capping_method = "direct",
  angle_threshold = 90,
  segments = FALSE,
  riverspace = FALSE,
  ...
)

Arguments

city_name

A place name as a string

river_name

A river name as a string

crs

The projected Coordinate Reference System (CRS) to use. If not provided, the suitable Universal Transverse Mercator (UTM) CRS is selected

bbox_buffer

Add a buffer region to the city boundary to avoid edge effects close to its limits

initial_method

The method employed to define the initial river corridor geometry. See initial_corridor() for the available methods

initial_buffer

Buffer region to add to the river geometry to setup the initial corridor (only used if initial_method is "buffer")

dem

Digital elevation model (DEM) of the region (only used if initial_method is "valley")

capping_method

The method employed to connect the corridor edge end points (i.e. to "cap" the corridor). See cap_corridor() for the available methods

angle_threshold

Only network edges forming angles above this threshold (in degrees) are considered when forming segment edges. See get_segments() and rcoins::stroke(). Only used if segments is TRUE.

segments

Whether to carry out the corridor segmentation

riverspace

Whether to carry out the riverspace delineation

...

Additional (optional) input arguments for retrieving the DEM dataset (see get_dem()). Only relevant if initial_method is "valley" and dem is NULL

Value

A simple feature geometry