dask.array.ma.ones_like

dask.array.ma.ones_like

dask.array.ma.ones_like(*args, **kwargs)[source]

This docstring was copied from numpy.ma.core.ones_like.

Some inconsistencies with the Dask version may exist.

Return an array of ones with the same shape and type as a given array.

Parameters
aarray_like

The shape and data-type of a define these same attributes of the returned array.

dtypedata-type, optional

Overrides the data type of the result.

New in version 1.6.0.

order{‘C’, ‘F’, ‘A’, or ‘K’}, optional

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.

New in version 1.6.0.

subokbool, optional.

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.

shapeint or sequence of ints, optional.

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.

New in version 1.17.0.

Returns
outMaskedArray

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

>>> 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.])