Hello John, I don't have an easy solution for you, but i'd like to point out that i was also having great difficulty with this some months ago. So much so, that i ended up reprojecting my entire map 90 degrees to the west (essentially moving the real dateline) so that nothing crossed the OpenLayers boundary and hence avoided using the wrapDateLine=true option. This has proved to be a pain since any new data needs to be manually shifted, not to mention the on-the-fly calculations i need to do for all vector points and longitude numbers which are user-facing.
A simple search of this usergroup will suggest that support for maps that wrap at the international dateline is quite poor. A lot of other users have had difficulty with this too, especially when using vectors which cross the line or appear either side of the line - causing them to either fail, or display only on one side at a time. I'd be interested to know if there is any scope for further development in improving the support for maps (WMS/WFS/Vector) which need to cross the international dateline. I feel this is the only agenda left which is leaving OpenLayers lagging behind it's rival tools. Best regards, Matt John Cartwright-2 wrote: > > sorry - forgot to mention this is happening on version 2.8, but I > think I also saw the same problem at 2.7. > > --john > > > On Jul 14, 2009, at 12:00 AM, John Cartwright wrote: > >> Hello All, >> >> I'm experiencing some strange behavior using a Layer defined like: >> >> var wms = new OpenLayers.Layer.WMS( "OpenLayers WMS", >> "http://labs.metacarta.com/wms/vmap0?";, {layers: >> 'basic'}, {wrapDateLine:true}); >> >> and then adding a WKT feature to it defined like: >> >> MULTILINESTRING((150 0, 180 0), (-180 0, -150 0)) >> >> >> It initially displays properly, but when one pans in the x >> direction, the feature does not redraw correctly. This seems to >> only be a problem when using the wrapDateLine option. >> >> >> Is this a known issue or am I missing something? >> >> Thanks! >> >> --john >> >> >> _______________________________________________ >> 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/problem-w--WMS-Layer-using-wrapDateLine-and-displaying-a-feature-which-crosses-the-dateline-tp3255732p3266679.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
