[OSM-talk] Updating of slippy map

[guy at graviles-reynolds.org]

I ran Hertfordshire midweek last week so Potters Bar should be upto date as of 
Wednesday on the OSM layer.

If you want to request tiles or are running tiles at home on your own machine and 
want to for tiles to be rendered then follow the 'Slippy Map tilenames' link in 
the 'See also' section on the tiles at home page on the Wiki, then at the bottom 
of this page follow the 'X,Y <->lat/lon' link in the tools section. This will 
take you to a tool which converts latitiude and longitude to a tile reference 
and vice versa, what you then want is the zoom=12 tile coordinates.

Guy 'Batchoy' Reynolds  

Quoting Steve Chilton <S.L.Chilton at mdx.ac.uk>:

> Is Potters Bar included in your Herts rendering? if not could it be? which
> layer would it appear on?
> I am working on finalising the surveying for PBar and it would be useful to
> be able to see and download the bits I need each time.
>  
> Cheers
> STEVE
> 
> 	-----Original Message----- 
> 	From: talk-bounces at openstreetmap.org on behalf of guy at graviles-
reynolds.org
> 
> 	Sent: Sun 12/17/2006 11:12 AM 
> 	To: talk at openstreetmap.org 
> 	Cc: 
> 	Subject: Re: [OSM-talk] Updating of slippy map
> 	
> 	
> 
> 	Quoting Dirk-Lüder Kreie <osm-list at deelkar.net>:
> 	
> 	> -----BEGIN PGP SIGNED MESSAGE-----
> 	> Hash: SHA1
> 	>
> 	> 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 old next to tiles weeks old (but not necessarily outdated).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
> 	
> 	
> 	
> 	
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