numpy.ma.MaskedArray.torecords#
method
- ma.MaskedArray.torecords()[source]#
Transforms a masked array into a flexible-type array.
The flexible type array that is returned will have two fields:
the
_data
field stores the_data
part of the array.the
_mask
field stores the_mask
part of the array.
- Parameters:
- None
- Returns:
- recordndarray
A new flexible-type
ndarray
with two fields: the first element containing a value, the second element containing the corresponding mask boolean. The returned record shape matches self.shape.
Notes
A side-effect of transforming a masked array into a flexible
ndarray
is that meta information (fill_value
, …) will be lost.Examples
>>> x = np.ma.array([[1,2,3],[4,5,6],[7,8,9]], mask=[0] + [1,0]*4) >>> x masked_array( data=[[1, --, 3], [--, 5, --], [7, --, 9]], mask=[[False, True, False], [ True, False, True], [False, True, False]], fill_value=999999) >>> x.toflex() array([[(1, False), (2, True), (3, False)], [(4, True), (5, False), (6, True)], [(7, False), (8, True), (9, False)]], dtype=[('_data', '<i8'), ('_mask', '?')])