API Reference > imodeljs-frontend > Tiles > TileTree > getEcefTransform getEcefTransform Method Beta Return the transform from the tile tree's coordinate space to ECEF (Earth Centered Earth Fixed) coordinates. If a geographic coordinate system is present then this transform will be calculated at the tile tree center. getEcefTransform(): Promise<undefined | Transform> Returns - Promise<undefined | Transform> Defined in core/frontend/src/tile/TileTree.ts Line 171 Last Updated: 11 June, 2024