as.unit(u, default = list(unit = expression(), scale = ""))
"DBAR"
,
"IPTS-68"
, "ITS-90"
, "PSS-78"
, and "UMOL/KG"
.
All other names yield a return value equal to the value of the
default
argument.u
is not a recognized string.unit
, an expression
,
and scale
, a string.
oce
functions, and is
provided as a convenience function for users.