Thanks, But I´ve never found working towgs84 Coordinates for Germany, NRW. Each time the points differes 50m!
Where can I get the right values? Greetings Byte bartvde wrote: > > I think you need to add the right towgs84 parameters to your projection > definition. > > For Dutch national grid I use (I added the towgs84 params): > Proj4js.defs["EPSG:28992"] = "+proj=sterea +lat_0=52.15616055555555 > +lon_0=5.38763888888889 +k=0.9999079 +x_0=155000 +y_0=463000 +ellps=bessel > +units=m > +towgs84=565.2369,50.0087,465.658,-0.406857330322398,0.350732676542563,-1.8703473836068,4.0812 > +no_defs "; > > Google [1] or check the EPSG database for the right towgs84 settings for > your projection. > > [1] http://osdir.com/ml/gis.geotools2.user/2006-12/msg00069.html > > Best regards, > Bart > >> >> Hi, >> >> it seems to work. >> But e.g. converting from 4326 to 31466 is very naccurately >> <http://dict.leo.org/ende?lp=ende&p=5tY9AA&search=inaccurately> >> naccurately. >> There a difference of 10-100 meters!! >> ?????????????????? >> >> Greetings >> >> Byte >> >> >> Tobias Wendorff (via Nabble) schrieb: >>> Bytechanger schrieb: >>> > MsgBox shows source coordinates .... no convert! >>> >>> Download proj4js and include it: >>> >>> <script type="text/javascript" src="../proj4js/lib/proj4js.js"></script> >>> <script type="text/javascript" >>> src="../proj4js/lib/projCode/merc.js"></script> >>> <script type="text/javascript" >>> src="../proj4js/lib/projCode/tmerc.js"></script> >>> >>> Then define everthing: >>> Proj4js.defs['EPSG:4326'] = '+proj=longlat +ellps=WGS84 +datum=WGS84 >>> +nadgri...@null +no_defs'; >>> >>> Proj4js.defs['EPSG:900913']= '+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'; >>> >>> Proj4js.defs['EPSG:31466'] = '+proj=tmerc +lat_0=0 +lon_0=6 +k=1.000000 >>> +x_0=2500000 +y_0=0 +ellps=bessel +units=m +nadgri...@null +no_defs'; >>> >>> Okay, you don't need 909913 and merc, I think ... but I like to >>> have control about these settings. >>> >>> _______________________________________________ >>> Users mailing list >>> [hidden email] >>> <http://n2.nabble.com/user/SendEmail.jtp?type=node&node=3788136&i=0> >>> http://openlayers.org/mailman/listinfo/users >>> >>> >>> ------------------------------------------------------------------------ >>> View message @ >>> http://n2.nabble.com/Convert-Coordinates-EPSG-4326-to-31466-doesn-t-work-tp3787906p3788136.html >>> >>> To unsubscribe from Convert Coordinates EPSG:4326 to 31466 doesn?t >>> work ??, click here >>> < (link removed) =>. >>> >>> >> >> >> -- >> View this message in context: >> http://n2.nabble.com/Convert-Coordinates-EPSG-4326-to-31466-doesn-t-work-tp3787906p3793412.html >> Sent from the OpenLayers Users mailing list archive at Nabble.com. >> _______________________________________________ >> Users mailing list >> [email protected] >> http://openlayers.org/mailman/listinfo/users >> > > > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > > -- View this message in context: http://n2.nabble.com/Convert-Coordinates-EPSG-4326-to-31466-doesn-t-work-tp3787906p3828964.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
