[OSM-talk] Updating of slippy map

[guy at graviles-reynolds.org]

Quoting Dirk-Lüder Kreie <osm-list at deelkar.net>:

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> Steve Chilton schrieb:
> > Thanks for the offer. I will see how I get on first before troubling you.
> > Incidentally, can you expand on your "data is of mixed quality" comment?
> > Is there something the project should be addressing here?
> >  
> > Cheers
> > STEVE
> 
> No sorry that was due to a lack of words (I'm not a native english
> speaker). The tiles are not from a single dataset like the mapnik layers
> that are generated from a single database dump, but the tiles represent
> what was available when the tile was rendered. Additionally the tiles
> are rendered at very different times so you might get tiles a few hours
> old next to tiles weeks old (but not necessarily outdated).
> Then there have been some changes in the rendering, patches to
> osmarender for example, that affected the visual outcome, together with
> the fact that some tiles get updated more often than others that *may*
> lead to a strange appearance on the map.
> 
> And you are not really troubling me with requests. I am working on a
> jobserver (first only for my 4-5 renderers) that can take requests
> automatically.
> Furthermore experience shows that the tiles at home crowd can render faster
> than the Requests api can generate new jobs, so there are times where I
> am glad to have some meaningful render-work for my machines, i.e. your
> requests...

I have a set of perl wrappers which I run for specific tilesets, so whilst my 
renderers spending most of their time rendering random tiles, I do regularly 
run specific sets i.e. Baldock where I am based and do most of my mapping, 
North Herts where I do most of my regular travelling, Hertfordshire as part of 
the Wikiproject.

Thus Baldock will be as up to date as my last edit and there are only a couple 
of us working here. Simlarly with North Herts, where there a few more of us. 
Whilst my intention is only too render Hertfordshire once a week/fortnight, as 
it takes several days to render because of the amount of data.

The volume of information in these specific areas also explains why Dirk maybe 
way ahead on tiles uploaded, and I appear to be ahead on Bytes of data.

Guy 'Batchoy' Reynolds