Thanks for your reply Adam.

That's true "doesn't imply there are no poi outside of the
> bbox which don't also satisfy this.".

But, then, it means this heuristic : "SW Geohash / NE geohash then GQL
for points > to SW and < to NE" will retrieve points also located
outside bounding box ...
What is it then ? are we looking for a Minimum bounding rectangle ?
But this program returns also outside points... where is the magic ?
Why does everybody spring around geohash then ?
This heuristic returns an exact set of points located in a bounding
box as you could say a car cost between 100 and 10.000 dollars...No
precision at all.

So, I thought I missunderstood how to use geohash but it seems it's
not the case.

Strange.

Is there any geohash master over there to explain if yes or no it is
possible to be precise for points located in a bounding box with
geohash and gae ?

Regards,

Pierre

On 4 sep, 23:02, Adam <[EMAIL PROTECTED]> wrote:
> No idea really.
>
> Though assuming
>
> sw < poi < ne
>
> for all poi in the bbox, doesn't imply there are no poi outside of the
> bbox which don't also satisfy this.
>
> The implications of this:
>
> sw = geohash.Geohash('speq0uw18pb50')
> ne = geohash.Geohash('spvg2gn5bpb08')
>
> bb = sw + ne
> bb.bbox()
>   (0.0, 39.375, 11.25, 45.0)
>
> are interesting.
>
> A
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