API Reference > geometry-core > ArraysAndInterfaces > Point3dArrayCarrier > getVector3dAtCheckedVectorIndex getVector3dAtCheckedVectorIndex Method Access by index, returning strongly typed Vector3d getVector3dAtCheckedVectorIndex(index: number, result?: Vector3d): undefined | Vector3d Parameter Type Description index number index of point within the array result Vector3d caller-allocated destination Returns - undefined | Vector3d undefined if the index is out of bounds Defined in geometry3d/Point3dArrayCarrier.ts Line 62 Last Updated: 11 June, 2024