Hi, I'm using WGS84 projection for my topo map GIS data, and use this parameter for my osm.xml:
<Map srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"> You can see may sample result as follow: http://maps.navigasi.net/index.php?y=-8.40833&x=116.41319&z=13 But I don't know, mapnik sometimes make wrong result at: http://maps.navigasi.net/index.php?y=-8.19176&x=110.71912&z=9 but there's no problem if I try zoom into level 10: http://maps.navigasi.net/index.php?y=-8.19176&x=110.71912&z=10 I tested using nik2img, both zoom level has same correct result, so I don't know how to fix this problem :( Buyung Akram setiap tempat adalah unik, http://www.navigasi.net/ On Sun, Aug 7, 2011 at 11:42 PM, Graham Jones <[email protected]>wrote: > I had this problem when I first tried to render contours, and the problem > was the projection - the contours were in lat/lon and the rest of the data > mercator. This meant that the contours layer needed a projection string > like: > +proj=latlong +datum=WGS84 > compared to the OSM data layers that have a projection like: > +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 > +k=1.0 +units=m +nadgrids=@null +no_defs > > You might not have made the same mistake though! > > Graham > > > -- > Graham Jones > Hartlepool, UK. > > > _______________________________________________ > 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
