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# How to calculate Diagonal of a Matrix?

# How to calculate Diagonal of a Matrix?

This recipe helps you calculate Diagonal of a Matrix

This python source code does the following: 1. Creates your own numoy matrix 2. Calculates trace of the given matrix

In [1]:

```
## How to calculate Diagonal of a Matrix
def Kickstarter_Example_8():
print()
print(format('How to calculate Diagonal of a Matrix', '*^72'))
# Load library
import numpy as np
# Create matrix
matrix = np.array([[1, 2, 3, 23],
[4, 5, 6, 25],
[7, 8, 9, 28],
[10, 11, 12, 41]])
# Return diagonal elements
print()
print(matrix.diagonal())
# Calculate the tracre of the matrix
print()
print(matrix.diagonal().sum())
Kickstarter_Example_8()
```

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