Issue When Extending A Matrix-like Numpy Array By Adding Extra List

I wrote the following code that does: (1) Generate root matrix of shape (3, 16), and (2) Generate 1000 binary vectors C such that each vector is added at the end of the root matrix

Solution 1:

If you can swap this:

batch = root[i:(i + (len(root)))]
batch = np.append(batch, C[i])

For this:

batch = np.append(batch, [C[i]], axis=0)

axis allows you to append two matrices on a particular dimension. So we make C[i] into a matrix and append it in dimension 0.

I am not sure what the intention of this batch = root[i:(i + (len(root)))] is but it shortens batch to a matrix the size of root every time so it will not increase in size. It actually shrinks as you near the end of root.

Also C is not always 1000 vectors. Making them unique removes some.