API Reference > imodeljs-frontend > Views > calculateEcefToDbTransformAtLocation calculateEcefToDbTransformAtLocation Function Calculate the ECEF to database (IModel) coordinate transform at a provided location, using the GCS of the iModel. The transform will exactly represent the GCS at the provided location. calculateEcefToDbTransformAtLocation(originIn: Point3d, iModel: IModelConnection): Promise<Transform | undefined> Parameter Type Description originIn Point3d iModel IModelConnection Returns - Promise<Transform | undefined> Defined in core/frontend/src/BackgroundMapGeometry.ts Line 393 Last Updated: 11 June, 2024