| Group: | Matrix Manipulation |
| Topic: | General Commands |
| See also: | matrix unit |
| Function: | diag | |
| Description: | diag creates a diagonal matrix from a vector. |
| Usage: | z = diag (x) | |
| Input: | ||
| x | p x 1 matrix | |
| Output: | ||
| z | p x p diagonal matrix | |
diag(1:4)
Contents of diag [1,] 1 0 0 0 [2,] 0 2 0 0 [3,] 0 0 3 0 [4,] 0 0 0 4