Hi Jaak, Could you try removing "+nadgri...@nul" from source SRS and see if this fixes your problem.
Please, consider subscribing to mapnik-users. Regards, Artem 2010/1/12 Jaak Laineste (Nutiteq) <[email protected]>: > Does it really work? I converted processed_p file with ogr2ogr into > MapInfo format (as I needed to use it with MapInfo Pro) with following > command: > > ogr2ogr -f "MapInfo File" -s_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 +nadgri...@null > +no_defs +over" -t_srs EPSG:4326 processed_mi_wgs processed_p.shp > > But the result is about 20 km north of the correct position (in > Europe, it depends on latitude, in equator error is 0). Looks like an > ellipsoid error for me. > > Actually my final target is to create similar polygons for sea (to > use as sea mask in top of raster data). Similar tiled way like > processed_p has for land. Like "invert" the data. Maybe someone > somewhere has done it already and can share the result? > > /Jaak > > 2009/12/18 Frederik Ramm <[email protected]>: >> Hi, >> >> Alexrk wrote: >>>> The projection is spherical mercator (900913), you can download a .PRJ >>>> file from the menu on >>>> >>>> http://spatialreference.org/ref/sr-org/6627/ >>> >>> I've tried it in ArcMap - doesn't fit with a regular Mercator .prj file. >> >> Yes; "regular Mercator" is something other than "spherical Mercator". >> >>> I don't know, what projection this file actually is :( >> >> processed_p.shp is spherical mercator (properly EPSG:3857, formerly >> EPSG:900913, and erroneously EPSG:3857). >> >> If you don't like it, you can use ogr2ogr to reproject the shape to >> something else. >> >> Bye >> Frederik >> >> -- >> Frederik Ramm ## eMail [email protected] ## N49°00'09" E008°23'33" >> >> _______________________________________________ >> talk mailing list >> [email protected] >> http://lists.openstreetmap.org/listinfo/talk >> > > > > -- > Jaak Laineste > www.nutiteq.com > Skype: jaakl3000 > Mobile: +372 509 2586 > _______________________________________________ > 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
