2008/6/2 Stefan Keller <[EMAIL PROTECTED]>: > P.S. What I'm missing in most rule definitions from Mapnik, Osmarender and > Kosmos (as far as I know them) is that there is no rendering priority, > right? With that one could control explicitly e.g. the rendering of parking > whih overlap railway station symbols.
There is a rendering priority for all of them. Mapnik operates on a painters model, which means objects are drawn one at a time. The order that objects are returned from the db for each layer, the order of the layers in the osm.xml file, and the order that each object is compared against the rendering rules in each style are all important (although the last one is rarely used since each feature generally only matches one filter to prevent brain-exploding complexity). So, as a cartographer, I can say "I want all station symbols drawn at the expense of parking symbols" and control that through the rendering rules, by putting the station symbols first. Cheers, Andy _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
