colour.utilities.tsplit¶

colour.utilities.tsplit(a: Union[ArrayLike, NestedSequence[NumberOrArrayLike]], dtype: Optional[Union[Type[DTypeBoolean], Type[DTypeNumber]]] = None) → NDArray[source]¶

Split given stacked array \(a\) along the last axis (tail) to produce an array of arrays.

It is used to split a stacked array produced by the colour.utilities.tstack() definition.

Parameters

a (Union[ArrayLike, NestedSequence[NumberOrArrayLike]]) – Stacked array \(a\) to split.
dtype (Optional[Union[Type[DTypeBoolean], Type[DTypeNumber]]]) – numpy.dtype to use for initial conversion to numpy.ndarray, default to the numpy.dtype defined by colour.constant.DEFAULT_FLOAT_DTYPE attribute.

Returns

Array of arrays.

Return type

numpy.ndarray

Examples

>>> a = np.array([0, 0, 0])
>>> tsplit(a)
array([ 0.,  0.,  0.])
>>> a = np.array(
...     [[0, 0, 0],
...      [1, 1, 1],
...      [2, 2, 2],
...      [3, 3, 3],
...      [4, 4, 4],
...      [5, 5, 5]]
... )
>>> tsplit(a)
array([[ 0.,  1.,  2.,  3.,  4.,  5.],
       [ 0.,  1.,  2.,  3.,  4.,  5.],
       [ 0.,  1.,  2.,  3.,  4.,  5.]])
>>> a = np.array(
...     [[[0, 0, 0],
...       [1, 1, 1],
...       [2, 2, 2],
...       [3, 3, 3],
...       [4, 4, 4],
...       [5, 5, 5]]]
... )
>>> tsplit(a)
array([[[ 0.,  1.,  2.,  3.,  4.,  5.]],

       [[ 0.,  1.,  2.,  3.,  4.,  5.]],

       [[ 0.,  1.,  2.,  3.,  4.,  5.]]])

colour.utilities.tstack

colour.utilities.row_as_diagonal