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# numpy.ma.MaskedArray.all

`MaskedArray.``all`(axis=None, out=None, keepdims=<class numpy._globals._NoValue>)

  Returns True if all elements evaluate to True.

  The output array is masked where all the values along the given axis are masked: if the output would have been a scalar and that all the values are masked, then the output is `masked`.

  Refer to `numpy.all` for full documentation.

  See also

  `ndarray.all`
    corresponding function for ndarrays
  `numpy.all`
    equivalent function

  Examples

      >>> np.ma.array([1,2,3]).all()
      True
      >>> a = np.ma.array([1,2,3], mask=True)
      >>> (a.all() is np.ma.masked)
      True