How to use np.arange?

The np.arange function in NumPy is used to create an array of evenly spaced values within a specified range. Here's how to use it:

Syntax

numpy.arange([start, ]stop[, step])

Parameters

• start (optional): The starting value of the sequence (default is 0).
• stop: The end value of the sequence (exclusive).
• step (optional): The spacing between values (default is 1).

Examples

1. Basic Usage

   import numpy as np
   x = np.arange(10)
   # Output: array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])

2. Specifying Start and Stop

   y = np.arange(5, 15)
   # Output: array([ 5,  6,  7,  8,  9, 10, 11, 12, 13, 14])

3. Specifying Step

   z = np.arange(0, 10, 2)
   # Output: array([0, 2, 4, 6, 8])

Use Cases

• Creating sequences of numbers for loops or data generation.
• Useful in plotting and simulations.

Feel free to experiment with different parameters to see how np.arange behaves! If you want to learn more, consider checking out relevant labs on LabEx.