CODEWITHSUNDEEP
pythonnumpy
ram
ram

Reputation: 37

Python numpy library log method returning wrong value

Python numpy library log method returning wrong value so please help me.

import numpy as np
print('Log :',np.log(0.25))

numpy log method returns -1.38629436112

Excel log function =LOG(0.25) returns -0.602059991327962 Then I Calculated manually using calculator it returns -0.602059991327962.

Upvotes: 0

Views: 2137

Answers (1)

Ignacio Vergara Kausel
Ignacio Vergara Kausel

Reputation: 5996

Because the log function is in base e while your calculator and excel are base 10 by default. Use np.log10(0.25) and you'll get the value you want.

Upvotes: 5

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