ud_are_convertible: Test if two units are convertible
Description
Parses and checks whether units can be converted by UDUNITS-2. Units may not
be convertible either because they are different magnitudes or because one
(or both) units are not defined in the database.
Usage
ud_are_convertible(x, y)
Value
boolean, TRUE if both units exist and are convertible.
Arguments
x
character or object of class symbolic_units, for the symbol
of the first unit.
y
character or object of class symbolic_units, for the symbol
of the second unit.