Function qrQy

qrQy(q: QR, y: readonly number[] | Float64Array<ArrayBufferLike>): number[]
Computes Q %*% y for a vector y. Equivalent to R's qr.qy().
Parameters
- q: QR
  A QR decomposition from qr.
- y: readonly number[] | Float64Array<ArrayBufferLike>
  A vector with as many elements as the decomposed matrix has rows.
Returns number[]
Q %*% y as a vector.
Example
```
const q = qr([[3, 0], [4, 5]]);
qrQy(q, [-5, 0]); // [3, 4]
```
- Defined in linalg/qr.ts:467
qrQy(q: QR, y: MatrixInput): number[][]
Computes Q %*% y for a matrix y.
Parameters
- q: QR
  A QR decomposition from qr.
- y: MatrixInput
  A matrix (array of rows) with as many rows as the decomposed matrix.
Returns number[][]
Q %*% y as an array of rows.
- Defined in linalg/qr.ts:475
qrQy(q: QR, y: VectorOrMatrix): number[] | number[][]
Computes Q %*% y.
Parameters
- q: QR
  A QR decomposition from qr.
- y: VectorOrMatrix
  A vector or a matrix with as many rows as the decomposed matrix.
Returns number[] | number[][]
A vector if y is a vector, otherwise an array of rows.
- Defined in linalg/qr.ts:483