Python | Numpy np.lagfit() method

With the help of np.lagfit() method, we can get the least squares fit of laguerre series of a given data by using np.lagfit() method.

Syntax : np.lagfit(x, y, deg)
Return : Return the least squares fit of laguerre series to data.

Example #1 :
In this example we can see that by using np.lagfit() method, we are able to get the least squares fit of laguerre series of a given data.

# import numpy and lagfit
import numpy as np
from numpy.polynomial.laguerre import lagfit

x, y = [1, 2], [3, 4]
deg = 2

# import np.lagfit() method
gfg = lagfit(x, y, deg)

print(gfg)

Output :

[2.125 -0.125 -1.75]

Example #2 :

# import numpy and lagfit
import numpy as np
from numpy.polynomial.laguerre import lagfit

x, y = [1, 2, 3], [3, 4, 5]
deg = 3

# import np.lagfit() method
gfg = lagfit(x, y, deg)

print(gfg)

Output :

[3.06722689 -0.66386555 -0.40336134 0.40336134]