Python List of np arrays to array
I'm trying to turn a list of 2d numpy arrays into a 2d numpy array. For example,
dat_list = []
for i in range(10):
dat_list.append(np.zeros([5, 10]))
What I would like to get out of this list is an array that is (50, 10). However, when I try the following, I get a (10,5,10) array.
output = np.array(dat_list)
Thoughts?
you want to stack them:
np.vstack(dat_list)
Above accepted answer is correct for 2D arrays as you requested. For 3D input arrays though, vstack() will give you a surprising outcome. For those, use stack(<list of 3D arrays>, 0).