python-scipyHow do I use the trapz function in Python SciPy?
The trapz
function in SciPy is a numerical integration routine used to approximate the definite integral of a given function. It uses the trapezoidal rule to approximate the area under a curve.
Example code
import numpy as np
from scipy.integrate import trapz
x = np.array([0, 1, 2, 3, 4])
y = np.array([1, 4, 3, 2, 5])
integral = trapz(y, x)
print(integral)
Output example
9.0
Code explanation
import numpy as np
: imports the NumPy library asnp
from scipy.integrate import trapz
: imports thetrapz
function from thescipy.integrate
libraryx = np.array([0, 1, 2, 3, 4])
: creates an array of the x-valuesy = np.array([1, 4, 3, 2, 5])
: creates an array of the y-valuesintegral = trapz(y, x)
: calculates the integral using thetrapz
functionprint(integral)
: prints the calculated integral
Helpful links
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