numpy.ma.left_shift#

ma.left_shift(a, n)[source]#

Shift the bits of an integer to the left.

This is the masked array version of numpy.left_shift, for details see that function.

See also

numpy.left_shift

Examples

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Shift with a masked array:

>>> arr = np.ma.array([10, 20, 30], mask=[False, True, False])
>>> np.ma.left_shift(arr, 1)
masked_array(data=[20, --, 60],
             mask=[False,  True, False],
       fill_value=999999)

Large shift:

>>> np.ma.left_shift(10, 10)
masked_array(data=10240,
             mask=False,
       fill_value=999999)

Shift with a scalar and an array:

>>> scalar = 10
>>> arr = np.ma.array([1, 2, 3], mask=[False, True, False])
>>> np.ma.left_shift(scalar, arr)
masked_array(data=[20, --, 80],
             mask=[False,  True, False],
       fill_value=999999)

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