Function eye
Create a 2-dimensional identity matrix with size m x n or n x n.
The matrix has ones on the diagonal and zeros elsewhere.
Syntax
eye(n)
eye(n, format)
eye(m, n)
eye(m, n, format)
eye([m, n])
eye([m, n], format)
Parameters
Parameter |
Type |
Description |
size |
...number | Matrix | Array |
The size for the matrix |
format |
string |
The Matrix storage format |
Returns
Type |
Description |
Matrix | Array | number |
A matrix with ones on the diagonal. |
Examples
eye(3); // returns [[1, 0, 0], [0, 1, 0], [0, 0, 1]]
eye(3, 2); // returns [[1, 0], [0, 1], [0, 0]]
var A = [[1, 2, 3], [4, 5, 6]];
eye(size(A)); // returns [[1, 0, 0], [0, 1, 0]]
See also
diag,
ones,
zeros,
size,
range