numpy.vstack(tup)[source]
Stack arrays in sequence vertically (row wise).
Take a sequence of arrays and stack them vertically to make a single array. Rebuild arrays divided by vsplit
.
Parameters: |
tup : sequence of ndarrays Tuple containing arrays to be stacked. The arrays must have the same shape along all but the first axis. |
---|---|
Returns: |
stacked : ndarray The array formed by stacking the given arrays. |
See also
stack
hstack
dstack
concatenate
vsplit
Equivalent to np.concatenate(tup, axis=0)
if tup
contains arrays that are at least 2-dimensional.
>>> a = np.array([1, 2, 3]) >>> b = np.array([2, 3, 4]) >>> np.vstack((a,b)) array([[1, 2, 3], [2, 3, 4]])
>>> a = np.array([[1], [2], [3]]) >>> b = np.array([[2], [3], [4]]) >>> np.vstack((a,b)) array([[1], [2], [3], [2], [3], [4]])
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https://docs.scipy.org/doc/numpy-1.11.0/reference/generated/numpy.vstack.html