Check the validity of an `fluvgeo` `valleyline` data structure

Checks that the input data structure `valleyline` meets the requirements for this data structure.

check_valleyline(valleyline)

Arguments

valleyline

sf object: a `valleyline` data structure used by the fluvgeo package.

Value

Returns TRUE if the `valleyline` data structure matches the requirements. The function throws an error for a data structure not matching the data specification. Returns errors describing how the the data structure doesn't match the requirement.