One efficient way to find combinations of length l from a large NumPy array is to use the itertools module in Python. Specifically, the itertools.combinations function can be used to generate all possible combinations of length l from an iterable.
Here is an example code snippet:
import numpy as np
from itertools import combinations
# Define numpy array
arr = np.array([1, 2, 3, 4, 5])
# Set the desired combination length
l = 3
# Generate all combinations of length l
combos = list(combinations(arr, l))
print(combos)
In this example, we first define a NumPy array with values [1, 2, 3, 4, 5]. We then set the desired combination length to be 3. Finally, we use the itertools.combinations function to generate all possible combinations of length 3 from the array.
The resulting combos variable is a list of tuples, where each tuple contains a combination of length 3. This method efficiently generates all combinations of a desired length from a large NumPy array.
Asked: 2021-10-15 11:00:00 +0000
Seen: 8 times
Last updated: Jul 26 '21