API Reference > imodeljs-common > Geometry > GridFileTransformProps GridFileTransformProps Interface This interface represents a grid files based geodetic transformation. Implemented by GridFileTransform Properties Name Type Description fallback undefined | PositionalVectorTransformProps The positional vector fallback transformation used for extents not covered by the grid files files GridFileDefinitionProps[] The list of grid files. Defined in core/common/src/geometry/GeodeticDatum.ts Line 267 Last Updated: 12 June, 2024