In order to simplify code, most terrainr
functions expect a set S4
class representation of coordinate pairs and bounding boxes. If the provided
data is not in the expected S4 format, these functions are used to cast the
data into the target class.
terrainr_bounding_box(bl, tr, coord_units = "degrees")
An object of class terrainr_bounding_box.
The bottom left (bl
) and top right (tr
) corners of
the bounding box, either as a terrainr_coordinate_pair object
or a coordinate pair. If the coordinate pair is not named, it is assumed to
be in (lat, lng) format; if it is named, the function will attempt to
properly identify coordinates.
Arguments passed to terrainr_coordinate_pair.
If bl
and tr
are already terrainr_coordinate_pair
objects, these arguments are not used.