As you know Matlab® has various tools and commands to obtain matrices shortly. Because the general mathematical calculations are done with matrices in Matlab®. Also, unit matrices are frequently used in Matlab® to do special mathematical calculations. So Matlab® has a special command that creates unit matrices called the ‘eye’ command. The use of the ‘eye’ command to obtain unit matrices is very basic. And there is a basic example about the use of the ‘eye’ command in Matlab®. Also, you will find information about how is the syntax of the ‘eye’ command in Matlab in this text.
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>> v = eye(3) z = 5.*v d = 5.*eye(5) v = 1 0 0 0 1 0 0 0 1 z = 5 0 0 0 5 0 0 0 5 d = 5 0 0 0 0 0 5 0 0 0 0 0 5 0 0 0 0 0 5 0 0 0 0 0 5 >>
As you can see from above, the use of ‘eye’ is very basic. The general use of the ‘eye’ command in Matlab® is like in the v variable. You simply type eye then type your square matrix dimension inside parentheses right after it. So v variable is obtained as a 3×3 square unit matrix with ‘eye’ command in Matlab®.
Also, you can do mathematical calculations with the ‘eye’ command in Matlab® as shown by the z variable above. The v variable which has obtained with the ‘eye’ command simply multiplied with the number of 5. You can see the result that the unit axis of the z matrix comprises only the number of 5.
You can directly do mathematical calculations with the ‘eye’ command as in the d variable above. We add 5 to the eye(5) unit matrix in variable d. Then you can see the result that the whole elements in the d matrix added with the number of 5.
So, you can understand that you could obtain various kinds of matrices in Matlab® in a short way by using various matrix generator codes such as this ‘eye’ command.
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This article is prepared for completely educative and informative purposes. Images used courtesy of Matlab®
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