Vofun Vofun - 5 months ago 43
Python Question

Putting 2 dimensional numpy arrays into a 3 dimensional array

I want to keep adding numpy arrays to another array in python.
let's say I have the following arrays:

arraytotal = np.array([])
array1 = np.array([1,1,1,1,1])
array2 = np.array([2,2,2,2,2])

and I want to append array1 and array2 into arraytotal. However, when I use:


it tells me:

'numpy.ndarray' object has no attribute 'append'

how can I append array1 and array2 into arraytotal?


You should append the arrays onto a regular python list and then convert the list to a numpy array at the end:

import numpy as np
total = []
for i in range(5,15):
    thisArray = np.arange(i)
total = np.asarray(total)

That loop makes a 2D array; you'd nest loops to produce higher dimensional arrays.