On Jun 28, 2010, at 12:44 AM, Thomas Walter wrote: > Hi Dane > > The rendering with nik2img seems to work correctly: > $ nik2img.py test2.xml test2.png > generates this image: > http://img251.imageshack.us/img251/470/test2sz.png >
Good. If you pass the --verbose flag, it will also spit out the bbox that countains all the layer extents. > The interesting thing is that with my program I get some of the street names > in the map so it seems to load the osm file and to read it. And in fact it > also > takes about 2 seconds to render it (256x256 pixels on an dual core pentium > 2Ghz). > > So imho the problem is neither the xml file nor the osm file nor the mapnik > installation. But maybe I did not select the correct envelope? Yes, possibly. > Currently I am using this: > map.zoom_all(); > Which should zoom to the extent of all layers, the same as nik2img does... > When selecting another envelope like this > Envelope<double> bbox(50.9,-1.45,51.0,-1.35); > map.zoomToBox(bbox); > it renders only the background. Btw, the coordinates are taken from the osm > file: <bound box='50.9,-1.45,51.0,-1.35' Well, what is your map srs? the bounding box must be in the coordinates of your map srs. > origin='http://www.openstreetmap.org/api/0.5' /> > > Could this be the problem? If it is, how can I select the correct bbox? > > Cheers, Tom > > > Am Montag 28 Juni 2010, um 10:18:34 schrieb Dane Springmeyer: >> Thomas. Hard to say what is wrong. I'm traveling so I cannot currently >> dig up that osm plugin example map. Can you render the map using >> nik2img and compare the results? >> >> Dane >> >> --- \o/ --- >> Sent from my phone >> >> On Jun 25, 2010, at 12:24 PM, Thomas Walter <[email protected]> >> >> wrote: >>> Hi there >>> >>> I am trying to generate map tiles out of an osm-file, but for some >>> reason >>> mapnik has problems with the rendering. Often it generates only the >>> background >>> and if it renders more then it is only some random stuff. >>> >>> When I try to render the test2.xml from >>> http://trac.mapnik.org/browser/trunk/plugins/input/osm >>> it generates this tile: >>> http://img145.imageshack.us/img145/8569/mapnikerror.png >>> >>> I am using mapnik 0.7.0 from the ubuntu repositories. >>> >>> The relevant source code (mainly taken from the examples) is: >>> datasource_cache::instance()->register_datasources >>> >>> ("/usr/lib/mapnik/0.7/input/"); >>> >>> freetype_engine::register_font >>> >>> ("/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf"); >>> >>> Map map (tdim,tdim); >>> load_map(map,"/home/tom/Desktop/test2.xml"); >>> map.zoom_all(); >>> >>> Image32 buf(map.getWidth(), map.getHeight()); >>> agg_renderer<Image32> ren(map,buf); >>> ren.apply(); >>> >>> QImage image((uchar*)buf.raw_data(),map.getWidth(), >>> >>> map.getHeight(),QImage::Format_ARGB32); >>> >>> Cheers >>> Tom >>> _______________________________________________ >>> Mapnik-users mailing list >>> [email protected] >>> https://lists.berlios.de/mailman/listinfo/mapnik-users > > _______________________________________________ > Mapnik-users mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/mapnik-users _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
