Get the Inner product of two One-Dimensional arrays in Python

To get the Inner product of two arrays, use the numpy.inner() method in Python. Ordinary inner product of vectors for 1-D arrays, in higher dimensions a sum product over the last axes. The parameters are 1 and b, two vectors. If a and b are nonscalar, their last dimensions must match.

Steps

At first, import the required libraries -

import numpy as np

Creating two numpy One-Dimensional array using the array() method −

arr1 = np.array([5, 10, 15]) arr2 = np.array([20, 25, 30])

Display the arrays −

print("Array1...\n",arr1) print("\nArray2...\n",arr2)

Check the Dimensions of both the arrays −

print("\nDimensions of Array1...\n",arr1.ndim) print("\nDimensions of Array2...\n",arr2.ndim)

Check the Shape of both the arrays −

print("\nShape of Array1...\n",arr1.shape) print("\nShape of Array2...\n",arr2.shape)

To get the Inner product of two arrays, use the numpy.inner() method in Python −

print("\nResult (Inner Product)...\n",np.inner(arr1, arr2))

Example

import numpy as np # Creating two numpy One-Dimensional array using the array() method arr1 = np.array([5, 10, 15]) arr2 = np.array([20, 25, 30]) # Display the arrays print("Array1...\n",arr1) print("\nArray2...\n",arr2) # Check the Dimensions of both the arrays print("\nDimensions of Array1...\n",arr1.ndim) print("\nDimensions of Array2...\n",arr2.ndim) # Check the Shape of both the arrays print("\nShape of Array1...\n",arr1.shape) print("\nShape of Array2...\n",arr2.shape) # To get the Inner product of two arrays, use the numpy.inner() method in Python # Ordinary inner product of vectors for 1-D arrays, in higher dimensions a sum product over the last axes. print("\nResult (Inner Product)...\n",np.inner(arr1, arr2))

Output

Array1... [ 5 10 15] Array2... [20 25 30] Dimensions of Array1... 1 Dimensions of Array2... 1 Shape of Array1... (3,) Shape of Array2... (3,) Result (Inner Product)... 800