Return an array of ones with the same shape and type as a given array.
The shape and data-type of a define these same attributes of the returned array.
Overrides the data type of the result.
Overrides the memory layout of the result. ‘C’ means C-order, ‘F’ means F-order, ‘A’ means ‘F’ if a is Fortran contiguous, ‘C’ otherwise. ‘K’ means match the layout of a as closely as possible.
If True, then the newly created array will use the sub-class type of a, otherwise it will be a base-class array. Defaults to True.
Overrides the shape of the result. If order=’K’ and the number of dimensions is unchanged, will try to keep order, otherwise, order=’C’ is implied.
The device on which to place the created array. Default: None. For Array-API interoperability only, so must be "cpu"
if passed.
New in version 2.0.0.
Array of ones with the same shape and type as a.
See also
empty_like
Return an empty array with shape and type of input.
zeros_like
Return an array of zeros with shape and type of input.
full_like
Return a new array with shape of input filled with value.
ones
Return a new array setting values to one.
Examples
>>> import numpy as np >>> x = np.arange(6) >>> x = x.reshape((2, 3)) >>> x array([[0, 1, 2], [3, 4, 5]]) >>> np.ones_like(x) array([[1, 1, 1], [1, 1, 1]])
>>> y = np.arange(3, dtype=float) >>> y array([0., 1., 2.]) >>> np.ones_like(y) array([1., 1., 1.])
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