How to filter array data using multiple condition?

[emaildipen]

I tried this but it didn't work,

NT['DN'] = NTL['DN'].where(NT['Cloud_Mask']==50&58)

It only filters the array values with NTL['Cloud_Mask']==50, in fact, I want to filter it using NT['Cloud_Mask'] that have values 50 and 58.

[keewis]

the operator precedence causes python to interpret your expression as:

NT['Cloud_Mask'] == (50 & 58)

which means that it will first compute the bitwise-and of 50 and 58 (the result is 50), after which it will compare that to your array. To fix that, we need to introduce parens:

(NT['Cloud_Mask'] == 50) & (NT['Cloud_Mask'] == 58)

However, you probably want to use isin instead:

NT['Cloud_Mask'].isin([50, 58])