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®.
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>> 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 >>
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. Think about a situation that you obtained your experiment results as a vector. And you want to apply a specific value inside your experiment to a formula. You could simply index this value from your vector then obtain your mathematical calculation in Matlab®.
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This article is prepared for completely educative and informative purposes. Images used courtesy of Matlab®
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