Define delineation parameters within an area of interest

Define delineation parameters within an area of interest

Usage

define_aoi(
  city_name,
  river_name,
  crs = NULL,
  network_buffer = 3000,
  dem_buffer = 2500,
  buildings_buffer = 100
)

Arguments

city_name

A character vector of length one

river_name

A character vector of length one

crs

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

network_buffer

Add a buffer (an integer in meters) around river to retrieve additional data (streets, railways, etc.). Default is 3000 m.

dem_buffer

Size of the buffer region (in meters) around the spatial network to retrieve the DEM.

buildings_buffer

Add a buffer (an integer in meters) around the river to retrieve additional data (buildings). Default is 100 m.

Value

A list with delineation parameter values, namely city_name and river_name as character vectors of length one, bb as object of class sf::bbox, crs as object of class sf::crs, and network_buffer, dem_buffer and buildings_buffer as numerical vector of length one.

Examples

if (FALSE) { # interactive()
# Get default parameters in AOI
aoi <- define_aoi("Bucharest", "Dâmbovița")

# Get parameters in AOI with custom CRS
aoi <- define_aoi("Bucharest", "Dâmbovița",
                  crs = "EPSG:3844")  # National projected CRS


# Get parameters in AOI with non-default buffers
aoi <- define_aoi("Bucharest", "Dâmbovița",
                  network_buffer = 2000,
                  dem_buffer = 2000,
                  buildings_buffer = 150)
}