Brian Peschel wrote: >Sent: 14 March 2008 1:19 PM >To: dev@openstreetmap.org >Subject: [OSM-dev] Rendering Rules > >First, let me say I think the maps that Open Street Map are producing >look great! So, here is my question(s). > >Based on what I can gather from the wiki, it looks like the US data all >started from TIGER data and has been updated from there. And, again >based on the wiki, all the rendering styles appear to come from the tags >that are used (highway=trunk, railway=rail, etc) based on this page: >http://wiki.openstreetmap.org/index.php/Map_Features
The TIGER data was imported to OSM as you say, but the reality is that with the exception of a few areas very little has been updated since. It needs losts of users on the ground to do that. > >So, how did the conversion from the TIGER CFCC codes to your tags >occur? Is there a master list that has the conversion from one set to >another? See this page of what was mapped to what: http://wiki.openstreetmap.org/index.php/TIGER_to_OSM_Attribute_Map > >I have been playing with the Mapnik source code for rendering some >maps. I have data in a custom format, so I had to write my own driver. >Is there some place I can see the style definitions that are being used >on Open Street Map? For example, as you zoom in, a road may appears >black. Then as you zoom in, it changes to white with a black >background. (Python calls them Style and Rule and c++ calls them >feature_type_style and rule_type). > Both Mapnik and Osmarender have a set of rules that apply at the various zoom levels. You can find these by browsing svn: http://svn.openstreetmap.org/ Hope this helps Cheers Andy >Thanks! > >Brian > > >_______________________________________________ >dev mailing list >dev@openstreetmap.org >http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev _______________________________________________ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
