We just ran into an issue trying to get ArcGIS LAS Datasets and Mosaic Datasets to correctly interpret the coordinate reference system in a LAS 1.2 file header. The LAS 1.2 spec uses the GeoTIFF GeoKey tags as opposed to the newer 1.4 spec which uses the WKT. Does anyone know which GeoTIFF GeoKeys translate to form the Geographic Coordinate System (GCS) portion of an ESRI defined coordinate system?
We tried to define a GCS_North_American_1983 using:
key 2050 - GeogGeodeticDatumGeoKey: Datum_North_American_Datum_1983
key 2056 - GeogEllipsoidGeoKey: Ellipse_GRS_1980
but for ArcGIS this resulted in:
Datum: D_North_American_1983
Spheroid: GRS_1980
Semimajor Axis: 6378137.0
