Access digital elevation model (DEM) for a given region

Usage

get_dem(
  bb,
  dem_source = "STAC",
  stac_endpoint = NULL,
  stac_collection = NULL,
  crs = NULL
)

Arguments

bb

A bounding box, provided either as a matrix (rows for "x", "y", columns for "min", "max") or as a vector ("xmin", "ymin", "xmax", "ymax"), in lat/lon coordinates (WGS84 coordinate referece system)

dem_source

Source of the DEM:

If "STAC" (default), DEM tiles are searched on a SpatioTemporal Asset Catalog (STAC) end point, then accessed and mosaicked to the area of interest

stac_endpoint

URL of the STAC API endpoint (only used if dem_source is "STAC"). To be provided together with stac_collection, or leave blank to use defaults (see default_stac_dem)

stac_collection

Identifier of the STAC collection to be queried (only used if dem_source is "STAC"). To be provided together with stac_endpoint, or leave blank to use defaults (see default_stac_dem)

crs

Coordinate reference system (CRS) which to transform the DEM to

Value

DEM as a terra SpatRaster object