[PROJ] RFC4: last chance to comment before motion

[Nyall Dawson]

On Mon, 6 Jan 2020 at 11:05, Greg Troxel <gdt at lexort.com> wrote:
>
> Nyall Dawson <nyall.dawson at gmail.com> writes:
>
> > On Sat, 4 Jan 2020 at 07:32, Even Rouault <even.rouault at spatialys.com> wrote:
> >>
> >> > And possibly, just do a
> >> > post-install, first run background task which bulk downloads the
> >> > complete set of grids from the CDN so that they're available
> >> > already...
> >>
> >> This brute force approach can work (unless we reach gigabytes of
> >> geodetic adjustment data :-))
> >
> > The other issue would be keeping track of updates to the grids. I'm
> > guessing there's no public api for determining the grid changes
> > available?
>
> I am behind in reading everything, but I would hope that within the proj
> world the downloaded grids have version numbers and are essentially just
> a caching distributed filesystem to get parts of the files which could
> have been downloaded.  So this should be the same as "does your
> installation have proj-datumgrid-north-america-1.3.tar.gz"?

Right - but you'd still need an api for querying the latest grid
version (or you'd have to implement this part yourself)

Nyall