Adding a symbolic unit allows it to be used in as_units,
make_units and set_units. No installation is performed if the
unit is already known by udunits.
install_symbolic_unit(name, warn = TRUE, dimensionless = TRUE)remove_symbolic_unit(name)
a length 1 character vector that is the unit name or symbol.
warns if the supplied unit symbol is already a valid unit symbol recognized by udunits.
logical; if TRUE, a new dimensionless unit is
created, if FALSE a new base unit is created. Dimensionless units are
convertible to other dimensionless units (such as rad), new base units
are not convertible to other existing units.
install_symbolic_unit installs a new dimensionless unit;
these are directly compatible to any other dimensionless unit. To install a
new unit that is a scaled or shifted version of an existing unit, use
install_conversion_constant or install_conversion_offset directly.<U+00E7>