cf.Data.unique

Data.unique()

The unique elements of the array.

Returns a new object with the sorted unique elements in a one dimensional array.

Examples:

>>> d = cf.Data([[4, 2, 1], [1, 2, 3]], 'metre')
>>> d.unique()
<CF Data: [1, 2, 3, 4] metre>
>>> d[1, -1] = cf.masked
>>> d.unique()
<CF Data: [1, 2, 4] metre>