correlation between arrays in python

python arrays vector correlation
user1681664 picture user1681664 · Feb 21, 2014 · Viewed 29.9k times · Source

I have 2 arrays.

 a1 = [1,2,4]
 a2 = [3,4,5]

how would I find the correlation between these 2 arrays using python.

In matlab, you would do:

corr(a1,a2)

How to do this in python?

Answer

CT Zhu picture CT Zhu · Feb 21, 2014

You need numpy.corrcoef:

In [8]:

np.corrcoef(a1,a2)
Out[8]:
array([[ 1.        ,  0.98198051],
       [ 0.98198051,  1.        ]])

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