/Python/Piecewise linear regression python

Piecewise linear regression python

from scipy import optimize

def piecewise_linear(x, x0, x1, b, k1, k2, k3):
    condlist = [x < x0, (x >= x0) & (x < x1), x >= x1]
    funclist = [lambda x: k1*x + b, lambda x: k1*x + b + k2*(x-x0), lambda x: k1*x + b + k2*(x-x0) + k3*(x - x1)]
    return np.piecewise(x, condlist, funclist)

p , e = optimize.curve_fit(piecewise_linear, x, y)

xd = np.linspace(-30, 30, 1000)
plt.plot(x, y, "o")
plt.plot(xd, piecewise_linear(xd, *p))

Source: songhuiming.github.io

Similar codes

3 votes108 views1 answer
Blackjack in python
Python
0 vote115 views1 answer
Dataproc initialization_actions error
Python
11 votes125 views3 answers
Python change a key in a dictionary
Python
0 vote116 views1 answer
Tqdm in place
Python
11 votes115 views2 answers
Is python a programming language
Python
0 vote108 views1 answer
Convert birth date to age pandas
Python
14 votes105 views6 answers
Python if condition
Python
0 vote112 views2 answers
How to update sklearn
Python
0 vote119 views2 answers
Python assert
Python
19 votes130 views2 answers
Python datetime string
Python