# Indexing Vector Elements in Matlab

## How to Index the Vectors in Matlab?

In general, matrices are used in mathematical calculations in Matlab®. Also, you can obtain vectors according to your purpose in Matlab. For example, if you have a vector that includes your various numbers inside it, you could require taking a specific number to use it in another mathematical calculation in Matlab which is called indexing. So in this text, we will show you how to index a number from a vector by showing a basic example below in Matlab®. In other words, you will see indexing vector elements in Matlab is very simple.

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## How to Index a Number of a Vector in Matlab®?

```
>> v = linspace(1,100,15)
z = 5*v(5)
v =
Columns 1 through 9
1.0000 8.0714 15.1429 22.2143 29.2857 36.3571 43.4286 50.5000 57.5714
Columns 10 through 15
64.6429 71.7143 78.7857 85.8571 92.9286 100.0000
z =
146.4286
>>
```

Firstly, as you can see above, we created a vector by using the linspace command that includes 15 elements inside it. For example, we want to take the fifth element of this matrix then multiply it with 5 in Matlab®. As you can see above, it is very basic to do it. Only type v then write the which element that you want to use inside parentheses right after that.

It is very basic to do in Matlab® like that. But sometimes this method could very important in some mathematical calculations. For instance, you obtained your experiment results as a vector. After that, you want to apply a specific value inside your experiment to a formula. You could simply index this element from your vector and then obtain your mathematical calculation in Matlab.

Above all, Matlab provides very good tools and commands to monitor the vectors in different ways. You can use these commands to calculate complex mathematical and engineering problems easily. Check the other articles showing the Matlab vector monitoring capabilities.

- Dot Products of Matrices and Vectors in Matlab®(Illustrated Expression)
- Creating Vectors with Logspace() Command in Matlab®(Illustrated Expression)
- Calculation of Absolute Values of Numbers, Vectors and Matrices in Matlab®(Illustrated Expression)
- Creating Diagonal Matrices with a Vector Elements in Matlab®(Illustrated Expression)
- Variance Calculation for Vectors in Matlab®(Illustrated Expression)

## Conclusion

So, indexing the vector elements in Matlab is very simple to use in your further mathematical calculations.

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This article is prepared for completely educative and informative purposes. Images used courtesy of Matlab®.

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