Re: Seeking clarification on PROJ support for temporal transformations

Nyall Dawson <[email protected]>
Newsgroups gmane.comp.gis.proj-4.devel
Message-ID <CAB28AsinJ5yAjW9bXy9wc2h91i74zAXf07BefBQuLCdrpF3q=A@mail.gmail.com>
On Wed, 28 Aug 2019 at 01:26, Even Rouault <[email protected]> wrote:
> > But, if I understand correctly, WKT2:2018 would be the ultimate answer
> > to this, in that it would allow us to specify the epoch of a dataset
> > as an integral part of the data's CRS definition (which it is).
>
> Not sure to understand your "what it is", but pedantically, the epoch of the
> dataset is not part of the CRS definition. Anyway...

I concede this point -- the specs clearly are in your favour:

16.1: "Coordinate epoch is not part of a CRS definition, it is
additional metadata for the coordinates which is required to ensure
that they are unambiguous when referenced to a dynamic CRS."

Nyall

>
> --
> Spatialys - Geospatial professional services
> http://www.spatialys.com
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