Stack 1-D tensors as columns into a 2-D tensor.
Take a sequence of 1-D tensors and stack them as columns
to make a single 2-D tensor. 2-D tensors are stacked as-is,
just like with hstack. 1-D tensors are turned into 2-D columns
tup (sequence of 1-D or 2-D tensors.) – Tensors to stack. All of them must have the same first dimension.
stacked – The tensor formed by stacking the given tensors.
stack, hstack, vstack, concatenate
>>> import mars.tensor as mt
>>> a = mt.array((1,2,3))
>>> b = mt.array((2,3,4))