[OSM-talk] Mapnik+OSM and TileCache

[Dutch]

Thats bloody damn sweet Christopher.. Now just get it in Mercator and
we have a slippy map..
I perused the areas where I have uploaded data and tagged ways, it is
great seeing ones work visualized like a map that works, even at high
zooms.

http://labs.metacarta.com/wms-c/demo.html?lat=55.67364&lon=12.56564&zoom=13&layers=00B00000F

 Center of Copenhagen


J.D. "Dutch" Schmidt



2006/11/26, Christopher Schmidt <crschmidt at metacarta.com>:
> After a heck of a lot of hacking last night, I finally got OSM rendering
> via mapnik. After some more playing, I added a mapnik layer to
> TileCache[1].
>
> The upshot?
>
> http://labs.metacarta.com/wms-c/demo.html?lat=51.51777&lon=-0.10979&zoom=9&layers=00B00000F
>
> Just-in-time (cache as you drag) OSM, based on the 11-20-06 planet.
>
> Questions that I have been asked:
>  * Can it do mercator? Yes, absolutely. It only doesn't because the
>   existing caches for the other 7 layers are not Mercator.
>  * Is it WMS? TileCache can take requests in either TMS or WMS formats,
>   but it simply parses these requests down to the appropriate TileID.
>  * Does it have any additional dependancies? Nope. Once you have Mapnik
>   installed, the only additional dependancy is TileCache, which is
>   pure-python BSD licensed code.
>  * How are the tiles stored on disk? Because of the limitations of the
>   ext3 filesystem, tiles are split up into multiple subdirectories, but
>   these directories are regular, and very similar to the 'GoogleLike'
>   file structure:
>     ./14/000/016/352/000/012/853.png
>       (zoom) (x0, x1, x2) (y0, y1, y2)
>   It's also possible (simple) to write your own file caching plugin,
>   that (for example) stores tiles on multiple servers, or use the
>   memcached memory caching plugin for faster access and distributed
>   caching.
>
> The Mapnik layer should be in the next release of TileCache, sometime in
> the next two weeks.
>
> [1] http://labs.metacarta.com/wms-c/
>
> Regards,
> --
> Christopher Schmidt
> MetaCarta
>
> _______________________________________________
> talk mailing list
> talk at openstreetmap.org
> http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
>