[Tilesathome] lowzoom how?

[Christopher Schmidt]

On Sat, Nov 17, 2007 at 06:01:55PM -0500, Adam Schreiber wrote:
> On Nov 17, 2007 5:54 PM, Christopher Schmidt <crschmidt at metacarta.com> wrote:
> > On Sat, Nov 17, 2007 at 05:43:13PM -0500, Adam Schreiber wrote:
> > > On Nov 17, 2007 5:37 PM, Christopher Schmidt <crschmidt at metacarta.com> wrote:
> > > > On Sat, Nov 17, 2007 at 03:35:09PM -0500, Adam Schreiber wrote:
> > > > > I ran lowzoom on http://a.tah.openstreetmap.org/Tiles/tile/6/17/25.png
> > > > > this morning and uploaded the result and it hasn't shown up yet.  I
> > > > > wouldn't classify that as successful though.
> > > >
> > > > I don't know exactly what you expect, but
> > > > http://tah.openstreetmap.org/Tiles/info.php?x=17&y=25&z=6&layer=tile
> > > > indicates that it was processed at 8:43AM Pacific time, so something
> > > > definitely happened... is this what you were talking about?
> > >
> > > I'm not saying it didn't finish and upload correctly.  I'm saying it
> > > hasn't shown up on the main slippy map or at informationhighway yet.
> > > Is there a delay between lowzoom uploads and display?
> >
> > I'm still confused -- are ou saying that the til you rendered is not the
> > same tile as http://a.tah.openstreetmap.org/Tiles/tile/6/17/25.png ? Or
> > something different?
> 
> I suppose it is the tile I rendered, but shouldn't it have more roads
> present as the TIGER import for SC has finished and I've cleaned up
> the coastline around Charleston (in the lower right corner)?

Okay, so the tile that you uploaded matches, but the tile you got out of
lowzoom.pl is not what you expected. This doesn't surprise me; I don't
know anything about htis part of the code, but my understanding is that
there are currently 3 sets of zoom levels:

12 -> 17 (tilesGen.pl, with 'tile' in layers conf)
8 -> 11 (tilesGen.pl, with 'lowzoom' in layers conf)
0 -> 7 (lowzoom.pl)

When I tried to run lowzoom.pl, it fetches tiles from zoom level 8, and
to the best of my knowledge, nothing is running the experimental lowzoom
renderer at the moment, which means that those tiles, from which your
lowzoom tile was built, were not up to date.

I don't know much about this code: You now know everything I do. But the
behavior you're describing doesn't surprise me, and I don't have any
advice as to what exactly you should be doing to resolve it. I'm sorry
about that.

Regards,
-- 
Christopher Schmidt
MetaCarta