find closest number to zero in array in python code example
Example 1: select closest number in array python
import numpy as np
def find_nearest(array, value):
array = np.asarray(array)
idx = (np.abs(array - value)).argmin()
return array[idx]
array = np.random.random(10)
print(array)
# [ 0.21069679 0.61290182 0.63425412 0.84635244 0.91599191 0.00213826
# 0.17104965 0.56874386 0.57319379 0.28719469]
value = 0.5
print(find_nearest(array, value))
# 0.568743859261
Example 2: python find closest value in list to zero
# ------- FIND VALUE (AND INDEX) CLOSEST TO ZERO INSIDE A LIST ------- #
myList = [23, -2, 20, 19, -10, 4]
min_val, idx = min([(abs(val), idx) for (idx, val) in enumerate(myList)])