Horizontal and vertical adjustment datasets for coordinate transformation to be used by PROJ 7 or later. PROJ is a generic coordinate transformation software that transforms geospatial coordinates from one coordinate reference system (CRS) to another. This includes cartographic projections as well as geodetic transformations.
New grids are added when made available
Per file. Under an Open Source Definition compliant license. Consult the READMEs or look at the Copyright TIFF tag of each file.
See all datasets managed by PROJ.