identity()
Returns the identity matrix
Syntax
y = identity(rows, columns)
Arguments
| Name | Description | Range | Type | Required |
|---|---|---|---|---|
| rows | number of rows † | [i, ∞) | integer | yes |
| columns | number of columns † | [i, ∞) | integer | no |
| † If one argument is supplied, then a square matrix is returned with ones on the diagonal and zeros elsewhere. If two arguments are supplied, then a matrix with size rows cols is returned, again with ones on the diagonal | ||||
Examples
y = identity(2)
| y(1,1) | y(1,2) | y(2,1) | y(2,2) |
| 1 | 0 | 0 | 1 |
Defined in
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