This function effectively wraps the results of route_types to
translate a route type to a human-readable form, such as translating 0 to
"Train". This function is not vectorised.
describe_route_type(
route_type,
user_id = determine_user_id(),
api_key = determine_api_key()
)character
Atomic integer or character.
Integer or character. A user ID or devid provided by Public
Transport Victoria. Refer to ?ptvapi for more details.
Character. An API key, with dashes, provided by Public
Transport Victoria. Refer to ?ptvapi for more details.