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]