numpy.ones
-
numpy.ones(shape, dtype=None, order='C')
[source] -
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.]])
-
© 2005–2019 NumPy Developers
Licensed under the 3-clause BSD License.
https://docs.scipy.org/doc/numpy-1.16.1/reference/generated/numpy.ones.html