, value, copy=True, shrink=True)

Mask the array x where the data are exactly equal to value.

This function is similar to masked_values, but only suitable for object arrays: for floating point, use masked_values instead.


x : array_like

Array to mask

value : object

Comparison value

copy : {True, False}, optional

Whether to return a copy of x.

shrink : {True, False}, optional

Whether to collapse a mask full of False to nomask


result : MaskedArray

The result of masking x where equal to value.

See also

Mask where a condition is met.
Mask where equal to a given value (integers).
Mask using floating point equality.


>>> import as ma
>>> food = np.array(['green_eggs', 'ham'], dtype=object)
>>> # don't eat spoiled food
>>> eat = ma.masked_object(food, 'green_eggs')
>>> print eat
[-- ham]
>>> # plain ol` ham is boring
>>> fresh_food = np.array(['cheese', 'ham', 'pineapple'], dtype=object)
>>> eat = ma.masked_object(fresh_food, 'green_eggs')
>>> print eat
[cheese ham pineapple]

Note that mask is set to nomask if possible.

>>> eat
masked_array(data = [cheese ham pineapple],
      mask = False,

Previous topic

Next topic

This Page