I want to remove all the nans from D1 or B1 and the same i-th elements from all the arrays (i.e. 2nd element of all array, so on)
import numpy as np
V1 = [ 7.98083 16.5216 18.4423 15.644 15.539 15.89 12.092 19.4274 14.953 15.943 13.665 16.777 15.901 13.477 15.563 11.217 15.415 16.023 16.855 14.851 14.419 12.345 14.234 16.515 16.148 ]
B1 = [ 8.75 nan 20.483 16.845 16.571 16.972 13.873 nan 16.238 16.625 14.715 nan 16.743 14.676 nan 12.578 16.459 17.148 20.313 15.801 15.462 13.998 15.421 20.129 18.055]
D1 = [ 132.024 3334.64 nan 1909.26 4256.32 2720.97 1926.14 nan 3612.81 5313.58 1444.71 2978.38 2400.28 999.693 3132.71 887.126 4574.86 1845.27 3905.06 2889.84 1687.51 2511.17 3176.06 2698.26 4980.22 ]
V = [[[x for x in D1 if ~np.isnan(x)] for x in B1 if
~np.isnan(x)] for x in V1 if ~np.isnan(x)]; print(len(V))
B = [[[z for z in V1 if ~np.isnan(z)] for x in D1 if
~np.isnan(x)] for y in B1 if ~np.isnan(y)]; print(len(B))
D = [[[y for y in B1 if ~np.isnan(y)] for z in V1 if
~np.isnan(z)] for x in D1 if ~np.isnan(x)]; print(len(D))
But the number of elements in the arrays remain 25,21 and 23 instead of 21,21 and 21. Thanks in Advance