Curve fittingΒΆ

A curve fitting example

import numpy as np
from scipy import optimize
import matplotlib.pyplot as plt
# Our test function
def f(t, omega, phi):
return np.cos(omega * t + phi)
# Our x and y data
x = np.linspace(0, 3, 50)
y = f(x, 1.5, 1) + .1*np.random.normal(size=50)
# Fit the model: the parameters omega and phi can be found in the
# `params` vector
params, params_cov = optimize.curve_fit(f, x, y)
# plot the data and the fitted curve
t = np.linspace(0, 3, 1000)
plt.plot(x, y, 'bx')
plt.plot(t, f(t, *params), 'r-')

Total running time of the script: ( 0 minutes 0.014 seconds)

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