cf.Field.binary_mask

Field.binary_mask()

A binary (0 and 1) missing data mask of the data array.

The binary mask’s data array comprises dimensionless 32-bit integers and has 0 where the data array has missing data and 1 otherwise.

Examples:

>>> print f.mask.array
[[ True  False  True False]]
>>> b = f.binary_mask()
>>> print b.array
[[0 1 0 1]]