ValueError: Data must be positive (boxcox scipy)

Question

I\'m trying to transform my dataset to a normal distribution.

0      8.298511e-03
1      3.055319e-01
2      6.938647e-02
3      2.904091e-02
4      7.422441e-0         


        

Answer 1

Is your data that you are sending to boxcox 1-dimensional ndarray?

Second way could be adding shift parameter by summing shift (see details from the link) to all of the ndarray elements before sending it to boxcox and subtracting shift from the resulting array elements (if I have understood boxcox algorithm correctly, that could be solution in your case, too).

https://docs.scipy.org/doc/scipy-0.16.1/reference/generated/scipy.stats.boxcox.html