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2023.0.0 - Português

# eye (Matlab function)

Identity matrix

### Matlab/Scilab equivalent

 Matlab Scilab `eye` `eye`

### Particular cases

 Note that in Matlab, A can contain complex values (in these cases, only real part of A is taken in account), what Scilab function do not tolerate.

B=eye(A)

If A is a scalar, then Matlab returns a A*A identity matrix but in Scilab you get a 1, use eye(A,A) to get the same matrix B. If A is a vector, Scilab and Matlab give the same B. Finally, if A is a matrix, in Scilab, B will be a matrix having the same size as A whereas in Matlab, you get an error message.

### Examples

 Matlab Scilab ```B = eye(2) % => B = [1,0; 0,1] B = eye(2,2) % => B = [1,0; 0,1] B = eye([3,3]) % => B = [1,0,0; 0,1,0; 0,0,1]``` ```B = eye(2) // => B = 1 B = eye(2,2) // => B = [1,0; 0,1] B = eye([3,3]) // => B = [1,0] B = eye(3,3) // => B = [1,0,0; 0,1,0; 0,0,1]```
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