What is the numpy.vstack() function in NumPy?

Overview

The vstack() function in NumPy is used to vertically stack or arrange arrays in sequence (row-wise).

Syntax

Error: Code Block Widget Crashed, Please Contact Support

Parameter value

The vstack() function takes a single parameter value, tup, which represents the arrays having the same shape along all the axis except for the first axis.

Return value

The vstack() function returns at least a 2D array formed by stacking vertically, the given arrays.

Example

import numpy as np

# creating input arrays

a = np.array([1, 2, 3, 4, 5])

b = np.array([6, 7, 8, 9, 10])



# stacking the arrays vertically

stacked_array = np.vstack((a, b))



# printing the new array

print(stacked_array)
Implementing the vstack() function

Explanation

  • Line 1: We import the numpy module.
  • Line 3–4: We create input arrays, a and b using the array() function.
  • Line 7: We vertically stack arrays a and b using the vstack() function. The result is assigned to a variable stacked_array.
  • Line 10: We print the newly stacked array stacked_array.

Free AI Mock Interviews
Coding Interview
Coding PatternsFree Interview
Gain insights and practical experience with coding patterns through targeted MCQs and coding problems, designed to match and challenge your expertise level.
System Design
YouTubeFree Interview
Learn to design a video streaming platform like YouTube by tackling functional and non-functional requirements, core components, and high-level to detailed design challenges.

Free Resources

License: Creative Commons-Attribution-ShareAlike 4.0 (CC-BY-SA 4.0)