How do I calculate percentiles with python/numpy?

Question

Is there a convenient way to calculate percentiles for a sequence or single-dimensional numpy array?

I am looking for something similar to Excel's percentile function.

I looked in NumPy's statistics reference, and couldn't find this. All I could find is the median (50th percentile), but not something more specific.

Answer 1

To calculate percentile with python you might be interested in the SciPy Stats package. It has the percentile function you're after and many other statistical goodies.

percentile() is available in numpy too.

import numpy as np 

a = np.array([1,2,3,4,5]) 

p = np.percentile(a, 50) 

print p 

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