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OSGeo / proj-datumgrid

Historic repository for proj datum grids. New developments are at https://github.com/OSGeo/PROJ-data
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Canadian NTv2 grid for Newfoundland and Labrador #99

Open rouault opened 4 years ago

rouault commented 4 years ago

https://webapp.geod.nrcan.gc.ca/geod/data-donnees/transformations.php?locale=en mentions

In the province of Newfoundland and Labrador there is a grid shift file for transforming between NAD83(Original) and NAD83(CSRS) epoch 2010.
Coverage | From | To | Grid
-- | -- | -- | --
Newfoundland (Island only) | NAD83(Original) | NAD83(CSRS) 2010 | Download                                          NLCSRSV4.GSB

Download link: https://webapp.geod.nrcan.gc.ca/geod/process/download-helper.php?file_id=NLCSRSV4 License: Open Government Licence - Canada

However there is no EPSG transformation for it

rouault commented 4 years ago

People at NRCan have been made aware about the lack of registration in EPSG for the transformation

rouault commented 4 years ago

WARNING: This repository is no longer open for adding new datasets. Starting with PROJ 7, the PROJ-data repository is the new home for PROJ datasets.

Go to its CONTRIBUTING instructions