Hi everybody. I've been developing a mapnik stylesheet for OSM data at kosmosnimki.ru for some time. Main map there is from commercial map data providers, but for some places where they lack coverage OSM is used. A couple of links to such OSM extracts: http://kosmosnimki.ru/permalink.html?Nce4b1b72 - Minsk, Belarus (all Belarus is from OSM data at z10-) http://kosmosnimki.ru/permalink.html?Nd4b9a5dd - Rzhev, Russia (at z12-) http://kosmosnimki.ru/permalink.html?Nc02e38b4 - Valaam island, Russia.
All that things were rendered using mapnik 0.7.1, postgis 2.0 and postgres 9.0. Other versions weren't checked, although might work too :) Why mapnik? It's stable, rather fast and proved to be able to render OSM data. It turned out that I'm too lazy to make my own rendering engine of production-quality in short term. But, I hate mapnik's stylesheets. That's why I wrote a mapcss-to-mapnik stylesheet converter, komap. http://code.google.com/p/kothic/source/browse/src/komap.py There are some limitations: it can't really do cascading. I tried to implement cascading, but resultimg mapnik stylesheets were 100+mb which is too large. Looking forward to mapnik2, which probably will let to do it better. But, there are some cool features inside too: - long roads that were cut into pieces are glued back and are labelled once, which is extremely useful in cities; - large cut-into-parts polygons are labelled once, or, at least, not too often: http://osm.org/go/e6aAYh_@- vs. http://latlon.org/~komzpa/screenshots/komap1.png ; - L-shaped objects have their labels inside of them, not in center of their bbox - http://kosmosnimki.ru/permalink.html?Nea27164d ; - If a marker has a label, and collision algorythms decide that label doesn't fit into image, both label and a marker are taken away from image; - It really takes layer= tag into account: http://kosmosnimki.ru/permalink.html?N7fbb27ef - It somewhat tries to generate optimized SQL. It's not perfect, but works ;) Why implementing a style converter instead of making mapnik understand mapcss? Well, a converter could probably be easily modified to make stylesheets for other renderers, like GeoServer or MapServer or whatever. I don't hope that it will be useful for somebody; it is already useful for me. Enjoy ;) -- Darafei "Komяpa" Praliaskouski OSM BY Team xmpp:[email protected] mailto:[email protected] _______________________________________________ Mapcss mailing list [email protected] http://lists.openstreetmap.org/listinfo/mapcss
