API Reference > imodeljs-common > Geometry > GridFileFormat GridFileFormat Type alias Type indicating the file format of the grid files. GridFileFormat = "NONE" | "NTv1" | "NTv2" | "NADCON" | "FRENCH" | "JAPAN" | "ATS77" | "GEOCN" Defined in core/common/src/geometry/GeodeticDatum.ts Line 185 Last Updated: 12 June, 2024