Hi! PGMapCSS is a library for PostgreSQL/PostGIS which works between an osm2pgsql based database and Mapnik. It processes database (usually OpenStreetMap) objects according to MapCSS rules and calculates resulting colors, widths and other properties for Symbolizers, even geometric modifications.
Over the last couple of weeks PGMapCSS matured a lot since 0.1.0 - thereofore it's time for a new release: 0.2.0. It's now a working library, that displays MapCSS stylesheets with Mapnik. (Although there are still some limitations: there are quite a few incompatibilities to pure MapCSS; I hope to achieve more compatibility in the future.) The biggest limitation in Mapnik is the lack of expression support for most of the Symbolizer options (as I wrote in the first announcement). I solved this by adding a pre-processor that generates Rules like: <Rule> <Filter>[width] = '1' and [color] = '#ff0000'</Filter> <LineSymbolizer stroke-width='1' stroke='#ff0000' /> <Rule> <Rule> <Filter>[width] = '2' and [color] = '#ff0000'</Filter> <LineSymbolizer stroke-width='2' stroke='#ff0000' /> <Rule> This is not very efficient - but it works (as long as no eval()-statement is used, because PGMapCSS can't guess the result of those and might miss a combination). Try it, tell me what you think of it: * https://github.com/plepe/pgmapcss Here are some examples: * https://github.com/plepe/pgmapcss/tree/master/examples On Sat, Aug 03, 2013 at 11:34:15AM +0200, Frederik Ramm wrote: > AFAIK MapServer supports [using expressions for Symbolizer options]. > Tiling can then be done either via the standard MapServer toolchain, or > MapProxy, or even continuing with mod_tile and using Tirex's "mapserver" > backend. I looked into the documentation of MapServer (and GeoServer), and I think it won't work with PGMapCSS. I documented my findings in https://github.com/plepe/pgmapcss/blob/master/doc/compatibility.creole Maybe it would help if someone with more knowledge on MapServer (or GeoServer or other software) would try it and report his/her experiences. greetings, Stephan -- Seid unbequem, seid Sand, nicht Öl im Getriebe der Welt! - Günther Eich ,---------------------------------------------------------------------. | Stephan Bösch-Plepelits, | | Technische Universität Wien - Studien Informatik & Raumplanung | | Projects: | | > openstreetbrowser.org > couchsurfing.org > tubasis.at > bl.mud.at | | Contact: | | > Mail: [email protected] > Blog: plepe.at | | > Twitter: twitter.com/plepe > Jabber: [email protected] | `---------------------------------------------------------------------' _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
