API Reference > geometry-core > Numerics > Matrix4d > rowOperation rowOperation Method Add scale times rowA to rowB. rowOperation(rowIndexA: number, rowIndexB: number, firstColumnIndex: number, scale: number): void Parameter Type Description rowIndexA number row that is not modified rowIndexB number row that is modified. firstColumnIndex number first column modified. All from there to the right are updated scale number scale Returns - void Defined in geometry4d/Matrix4d.ts Line 546 Last Updated: 11 June, 2024