patsy intercept term in cubic splines

[Hovnatan Karapetyan]

Hi,

I'm trying to understand cubic spline generation in patsy. As far as I can see from the output of 

import numpy as np

from patsy import dmatrix

x = np.linspace(0., 1., 100)

y1 = dmatrix("bs(x, df=6, degree=3, include_intercept=True)", {"x": x})

print(y1)

y2 = dmatrix("bs(x, df=6, degree=3, include_intercept=False)", {"x": x})

print(y2)

the y1 (with intercept) and y2 (without intercept) are the same. Is there something I am missing?

Thanks!

Hovnatan

[Nathaniel Smith]

Addressed here: https://github.com/pydata/patsy/issues/108

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Nathaniel J. Smith -- https://vorpus.org