[Proj] Canada NTv2.0 grid shift files

Saulteau Don sault.don at gmail.com
Sun Sep 16 02:45:42 EST 2018

Yea, it's been licensed like that for a while now I thought and they are at
without having to create and register an account at NRCAN to get them,
unless they're different and I missed something. i put in the original
request to make them open =)

Not sure why they got placed under non-free. Maybe it's the liability
clause that makes them non-free or not 'true' open data.

On Thu, Sep 13, 2018 at 11:59 AM Nicolas Cadieux <
nicolas.cadieux at archeotec.ca> wrote:

> Hi,
> According to your web site (see below) Canada’s NTv2.0 grid shift files
> are considered non-free Grids.  I have recently been in contact with NRCAN
> regarding this fact and they have confirm that the license of the file is
> now considered Open under Canada’s Open Data license.
> https://open.canada.ca/en/open-government-licence-canada
> We are now “... free to Copy, modify, publish, translate, adapt,
> distribute or otherwise use the Information in any medium, mode or format
> for any lawful purpose.”
> I am there proposing that Canada’s outdated NTv1.0 file should be removed
> from the proj packages and be replaced by the NTv2.0 grids.  I can provide
> the new license, the contacts at NRCAN, if needed, and the latest NTv2.0
> file in order to facilitate the proposed changes.
> If you are responsible for this part of the project or if there is a more
> formal way of asking this change, please contact me directly.
> Thanks,
> Nicolas Cadieux
> Btw, the link below for the file no longer works. I will provide a new
> link if needed during a transition period.
> https://proj4.org/resource_files.html
> “Non-Free Grids <https://proj4.org/resource_files.html#non-free-grids>
> Not all grid shift files have licensing that allows them to be freely
> distributed, but can be obtained by users through free and legal methods.
> Canada NTv2.0 <https://proj4.org/resource_files.html#canada-ntv2-0>
> Although NTv1 grid shifts are provided freely with PROJ, the
> higher-quality NTv2.0 file needs to be downloaded from Natural Resources
> Canada. More info: http://www.geod.nrcan.gc.ca/tools-outils/ntv2_e.php.”
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