[OSGeoJapan-discuss] 日本語データムシフトグリッド / Japanese datum shift grids

[Even Rouault]

Hello,

that is excellent news ! Thanks for that.

So this is "just" a matter of converting those .par files into NTv2 grids, or 
anything that GDAL can understand (once this is in a raster format that GDAL 
can read, we can easily make a NTv2 grid from it).

I've recorded this in https://github.com/OSGeo/proj-datumgrid/issues/68

We would need community involvement to do the conversion.

Best regards,

Even


> Just today I on behalf of Safe Software asked GSI what kind of license
> policy is applied to use the Grid Shift files such as TKY2JGD.par, which
> are published on their website.
> The answer from GSI is: those Grid Shift files (*.par) can be used
> according to the user policy described in this web page.
> 国土地理院コンテンツ利用規約
> https://www.gsi.go.jp/kikakuchousei/kikakuchousei40182.html
> 
> And, the user policy itself declares that it is compatible with CC BY.
> "ウ 本利用ルールは、クリエイティブ・コモンズ・ライセンスの表示4.0 国際（
> https://creativecommons.org/licenses/by/4.0/legalcode.jaに規定される著作権利用許諾条件。以下「C
> C
 BY」といいます。）と互換性があり、本利用ルールが適用されるコンテンツはCC BYに従うことでも利用することができます。"
> 
> Cheers,
> Takashi


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