[OSM-dev] [Talk-GB] Automating Freemap tile rendering
Martijn van Oosterhout
kleptog at gmail.com
Sun Feb 25 22:10:42 GMT 2007
On 2/25/07, Artem Pavlenko <artem at pavlenko.uklinux.net> wrote:
> Yes, it works now. But the quality of rendering is very poor. If you're using
> GD, please, dont!! Use Mapnik, inkscape or anything else that can do AA.
At what level are you referring to? At zoom-level <11 it should be
antialiasing but it's not working. At levels higher than that I havn't
implemented it. The question is: how good does it need to be? The
underlying data isn't great for PGS, you can see they've based it on
digitized satellite photos so the coastline wiggles back and forth as
it walks along the pixels.
> Still, having pre-rendered sea/land tiles is not a good idea , IMHO.
I'm not understanding this point. The user's browser does not read
mapnik files, only PNGs, so how do you propose to make the coastlines
visible then? Generate them on the fly???
> Why don't we join efforts and create one vector dataset which everyone can
> benefit from?
What I've written works from shapefiles, and I'm using unmodified PGS.
If you have a better vector dataset I can use that...
Have a nice day,
Martijn van Oosterhout <kleptog at gmail.com> http://svana.org/kleptog/
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