Hi, I tried your command with shapefile output ogr2ogr -f "ESRI Shapefile" -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 coastline_wgs84.shp processed_p.shp
Result suits fine with other maps I have. I could check the data up till 70° North. Perhaps there is something wrong in ogr2ogr handling MapInfo projection system. Have a try by converting data first to shapefile and read that in with MapInfo. -Jukka Rahkonen- Jaak Laineste wrote: > > 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
