numpy.ma.ones¶
-
numpy.ma.
ones
(shape, dtype=None, order='C') = <numpy.ma.core._convert2ma object>¶ Return a new array of given shape and type, filled with ones.
Parameters: - shape : int or sequence of ints
Shape of the new array, e.g.,
(2, 3)
or2
.- dtype : data-type, optional
The desired data-type for the array, e.g.,
numpy.int8
. Default isnumpy.float64
.- order : {‘C’, ‘F’}, optional, default: C
Whether to store multi-dimensional data in row-major (C-style) or column-major (Fortran-style) order in memory.
Returns: - out : ndarray
Array of ones with the given shape, dtype, and order.
See also
Examples
>>> np.ones(5) array([ 1., 1., 1., 1., 1.])
>>> np.ones((5,), dtype=int) array([1, 1, 1, 1, 1])
>>> np.ones((2, 1)) array([[ 1.], [ 1.]])
>>> s = (2,2) >>> np.ones(s) array([[ 1., 1.], [ 1., 1.]])