[GRASS-dev] [EXTERNAL] Re: r.external cache or add overviews?

[Markus Neteler]

On Mon, Dec 28, 2020 at 1:54 PM Newcomb, Doug <doug_newcomb at fws.gov> wrote:
>
> I ask because I have created a 55 billion pixel vrt of elevation data. I linked it to a GRASS mapset . It did take an hour to link ,

I think that most of the time during linking in r.external results
from the computation of the exact stats, not approximations for each
band.

> but the zooming and panning is reasonably responsive afterwards.

Good!

Markus