[QGIS-Developer] Proj 7 auto grid download

[Martin Dobias]

Hi Nyall

On Thu, Mar 19, 2020 at 7:53 AM Nyall Dawson <nyall.dawson at gmail.com> wrote:
>
> On Thu, 19 Mar 2020 at 16:49, Jürgen E. Fischer <jef at norbit.de> wrote:
> >
> > Yes. proj-dev-data is to huge for NSIS.  Best install via OSGeo4W until grids
> > are downloadable via proj.
>
> There's no plans to use proj 7's built in auto grid download. This
> isn't designed for GUI applications like QGIS -- if we did, we'd get
> UI hangs all over the place while QGIS is trying to transform
> coordinates, and proj blocks and waits for the download to occur.

Do you have some thoughts on how we are going to handle this in QGIS?
(Apart from that plan to download all grids on the first start :-))

My assumption was that QGIS would be shipped with no grids (simply too
much data to ship in installers), and if there would be a
transformation available with a missing grid, QGIS would show a
warning and let user download such a grid file with one click? Or did
you have something else in mind?

Cheers
Martin