Lennard, > They are dynamically included, by putting the relevant &layer-xxx; > references at the right spot in osm.xml. The ordering of <Layer> > elements in the stylesheet determines the order in which mapnik renders.
what do you mean by 'stylesheet' in this context? > So water, for instance, is loaded by way of osm.xml including > inc/layers.xml.inc, then including any file defined there, and then it's > actually 'activated' by encountering &layer-water; in osm.xml itself. > You may have missed that last bit. yes, I see that. but to 'activate' my own layer, I'd still have to manually edit osm.xml, wouldn't I? it's actually a pit confusing, that osm.xml both references layers via these external entities, and contains <Layer> and <Style> definitions on its own. > The normal osm.xml file on SVN does not have the xml.inc files included. > They are dynamically loaded by libxml2 during parsing of osm.xml. I see. the confusion comes from the content of these xml.inc files and osm.xml in general to be of similar purpose. wonder what make something get into a layer files, and what is in osm.xml itself. > They would only be included in a stylesheet if you tell generate_xml.py > to create a new stylesheet from osm.xml. You would also loose the > ability to do a simple svn up to keep in sync with osm.org, as you would > then also have to rerun generate_xml.py to recreate your local > stylesheet, after every svn update. yes, I see. my impression was that all of osm.xml is actually generated from the includes & stuff, and contains no other information. but, still. it seems that there is no 'simple' or 'elegant' way of just dropping a new layer-foo.xml.inc file into inc, and to make osm.xml automatically use the definitions in there. as at least one has to add an external entity reference manually. is this correct? Akos _______________________________________________ dev mailing list firstname.lastname@example.org http://lists.openstreetmap.org/listinfo/dev