numpy.ma.ones
-
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
-
-
shapeint or sequence of ints
-
Shape of the new array, e.g.,
(2, 3)
or2
. -
dtypedata-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.
-
likearray_like
-
Reference object to allow the creation of arrays which are not NumPy arrays. If an array-like passed in as
like
supports the__array_function__
protocol, the result will be defined by it. In this case, it ensures the creation of an array object compatible with that passed in via this argument.Note
The
like
keyword is an experimental feature pending on acceptance of NEP 35.New in version 1.20.0.
-
- Returns
-
-
outndarray
-
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.]])
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Licensed under the 3-clause BSD License.
https://numpy.org/doc/1.20/reference/generated/numpy.ma.ones.html