Function qr #
Calculate the Matrix QR decomposition. Matrix A is decomposed in
two matrices (Q, R) where Q is an
orthogonal matrix and R is an upper triangular matrix.
Syntax #
math.qr(A)
Parameters #
| Parameter | Type | Description |
|---|---|---|
A |
Matrix | Array | A two dimensional matrix or array for which to get the QR decomposition. |
Returns #
| Type | Description |
|---|---|
| {Q: Array | Matrix, R: Array | Matrix} | Q: the orthogonal matrix and R: the upper triangular matrix |
Throws #
Type | Description —- | ———–
Examples #
const m = [
[1, -1, 4],
[1, 4, -2],
[1, 4, 2],
[1, -1, 0]
]
const result = math.qr(m)
// r = {
// Q: [
// [0.5, -0.5, 0.5],
// [0.5, 0.5, -0.5],
// [0.5, 0.5, 0.5],
// [0.5, -0.5, -0.5],
// ],
// R: [
// [2, 3, 2],
// [0, 5, -2],
// [0, 0, 4],
// [0, 0, 0]
// ]
// }
