= NTv2
{wiki=NTv2}
NTv2, or National Transform Version 2, is a geospatial data transformation methodology used primarily in Canada for transforming geographic coordinates between different geodetic datums. It is designed to provide accurate transformations between the North American Datum of 1983 (NAD83) and other local datums, taking into account regional variations in Earth's shape and size. The NTv2 system uses a grid-based approach, where a set of transformation parameters are stored in grid files.
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