API Reference > geometry-core > ArraysAndInterfaces > IndexedXYZCollection > getVector3dAtCheckedVectorIndex getVector3dAtCheckedVectorIndex MethodAbstract Get from index as a strongly typed Vector3d. getVector3dAtCheckedVectorIndex(index: number, result?: Vector3d): Vector3d | undefined Parameter Type Description index number index of point within the array result Vector3d caller-allocated destination Returns - Vector3d | undefined undefined if the index is out of bounds Defined in core/geometry/src/geometry3d/IndexedXYZCollection.ts Line 68 Last Updated: 13 June, 2024