w3resource

Interpolate data points using NumPy and SciPy's Interpolate module

NumPy: Integration with SciPy Exercise-4 with Solution

Write a NumPy program to generate a set of data points using NumPy and perform interpolation using SciPy's interpolate module.

Sample Solution:

Python Code:

# Import necessary libraries
import numpy as np
from scipy import interpolate
import matplotlib.pyplot as plt

# Generate a set of data points using NumPy
x = np.linspace(0, 10, num=11, endpoint=True)
y = np.sin(x)

# Perform interpolation using SciPy's interpolate module
f = interpolate.interp1d(x, y, kind='cubic')

# Generate new x values for interpolation
x_new = np.linspace(0, 10, num=100, endpoint=True)
y_new = f(x_new)

# Plot the original data points and the interpolated data
plt.plot(x, y, 'o', label='Original data points')
plt.plot(x_new, y_new, '-', label='Interpolated data')
plt.legend()
plt.show()

Output:

Interpolated Data

Explanation:

  • Import necessary libraries:
    • Import NumPy, SciPy's interpolate module, and Matplotlib for plotting.
  • Generate a set of data points using NumPy:
    • Create x values evenly spaced between 0 and 10, and corresponding y values using the sine function.
  • Perform interpolation using SciPy's interpolate module:
    • Use SciPy's interp1d function with cubic interpolation.
  • Generate new x values for interpolation:
    • Create a finer set of x values for smoother interpolation.
  • Plot the original data points and the interpolated data:
    • Use Matplotlib to visualize the original and interpolated data.

Python-Numpy Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Solve Linear algebra problems with NumPy and SciPy.
Next: Filter Time Series data using NumPy and SciPy Signal processing.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://198.211.115.131/python-exercises/numpy/interpolate-data-points-using-numpy-and-scipys-interpolate-module.php