numpy.
dstack
Stack arrays in sequence depth wise (along third axis).
This is equivalent to concatenation along the third axis after 2-D arrays of shape (M,N) have been reshaped to (M,N,1) and 1-D arrays of shape (N,) have been reshaped to (1,N,1). Rebuilds arrays divided by dsplit.
dsplit
This function makes most sense for arrays with up to 3 dimensions. For instance, for pixel-data with a height (first axis), width (second axis), and r/g/b channels (third axis). The functions concatenate, stack and block provide more general stacking and concatenation operations.
concatenate
stack
block
The arrays must have the same shape along all but the third axis. 1-D or 2-D arrays must have the same shape.
The array formed by stacking the given arrays, will be at least 3-D.
See also
Join a sequence of arrays along a new axis.
vstack
Stack along first axis.
hstack
Stack along second axis.
Join a sequence of arrays along an existing axis.
Split array along third axis.
Examples
>>> a = np.array((1,2,3)) >>> b = np.array((2,3,4)) >>> np.dstack((a,b)) array([[[1, 2], [2, 3], [3, 4]]])
>>> a = np.array([[1],[2],[3]]) >>> b = np.array([[2],[3],[4]]) >>> np.dstack((a,b)) array([[[1, 2]], [[2, 3]], [[3, 4]]])