DimensionCoordinate.
unique
The unique elements of the data.
Data
The unique data array values in a one dimensional Data object.
Examples:
>>> print(f.array) [[4 2 1] [1 2 3]] >>> print(f.unique().array) [1 2 3 4] >>> f[1, -1] = cf.masked >>> print(f.array) [[4 2 1] [1 2 --]] >>> print(f.unique().array) [1 2 4]