Create a custom ufunc in NumPy to Add 10 to each element

Last update on December 21 2024 07:36:37 (UTC/GMT +8 hours)

Basic ufunc Creation:

Write a Numpy program that creates a custom ufunc that adds 10 to every element in a NumPy array. Use this ufunc on a 1D array of integers.

Sample Solution:

Python Code:

import numpy as np

# Define a custom ufunc that adds 10 to each element
def add_ten(x):
    return x + 10

# Create a ufunc from the custom function using np.frompyfunc
add_ten_ufunc = np.frompyfunc(add_ten, 1, 1)

# Create a 1D NumPy array of integers
array_1d = np.array([1, 2, 3, 4, 5])

# Apply the custom ufunc to the 1D array
result_array = add_ten_ufunc(array_1d)

# Print the original array and the resulting array
print('Original 1D array:', array_1d)
print('Resulting array after applying add_ten_ufunc:', result_array)

Output:

Original 1D array: [1 2 3 4 5]
Resulting array after applying add_ten_ufunc: [11 12 13 14 15]

Explanation:

• Import Libraries:
• Imported numpy as "np" for array creation and manipulation.
• Define Custom Function:
• Define a custom function add_ten that takes input x and returns x + 10.
• Create ufunc:
• Create a ufunc from the custom function using "np.frompyfunc". The function takes the custom function, the number of input arguments (1), and the number of output arguments (1).
• Create 1D NumPy Array:
• Created a 1D NumPy array named array_1d with integers [1, 2, 3, 4, 5].
• Apply Custom ufunc:
• Apply the custom ufunc “add_ten_ufunc()” to the 1D array to obtain the result.
• Print Results:
• Print the original 1D array and the resulting array after applying the custom "ufunc".

Python-Numpy Code Editor: