How to get cumulated values from timestamped arrays in even intervals [PYTHON]

Question

I have a numpy array with timestamps in seconds

For example, this array named a:

a = np.array(10,95,99,100,250)

Then I have an array b which gives me the amount of shares that come in corresponding to the timestamps in a:

b = np.array(1,2,3,4,5)

I want to find the number of shares that come in every minute, is there a quick way of doing this without iterating through the whole array?

• 10-70: 1 share came in
• 70-130: 9 shares came in
• 130-190: 0 shares came in
• 190 - 250: 5 shares came in

e.g.:

result = [1,9,0,5]

Answer 1

These's indeed a quick and painless way to do this:

bins = np.arange(10, 250+1, 60)
result, _ = np.histogram(a, bins, weights=b)