GEarth cannot display geography *POLYGONS* that cross the dateline. It can display linestrings just fine.
P. On Tue, Oct 16, 2012 at 2:54 AM, iam_gilbey <simonbolivar...@gmail.com> wrote: > Thanks for that info - it's something else to consider. > > Conclusion: Google Earth cannot display GEOGRAPHY data that crosses that > date line, without a hack such as making a table of split geographies. > > Does anyone disagree? (please disagree...!) > > Thanks, James > > On 12 October 2012 17:47, Paul Ramsey-4 [via PostGIS] <[hidden email]> > wrote: >> >> Even if you split the shapes, GEarth renders polygons in a non-normal >> kind of way which you might find unacceptable >> >> http://blog.opengeo.org/2010/08/10/shape-of-a-polygon/ >> >> The quick fix is to render them as lines, not polygons. there's no fix >> to get them to fill using great circle edges, GEarth just doesn't work >> that way. >> >> P. >> >> On Fri, Oct 12, 2012 at 4:03 AM, iam_gilbey <[hidden email]> wrote: >> >> > I have many polygons, including several that cross the date line. They >> > are >> > stored as GEOGRAPHY and work perfectly with PostGIS v2.0.1, PostgreSQL >> > 9.1.3 >> > on windows XP. I can serve this data using Geoserver (v2.1), and view it >> > using open layers, where the polygons crossing the date line render >> > correctly. >> > >> > I cannot however convert the data into KML (viewed in Google Earth 5.1), >> > or >> > view it in Quantum GIS (v1.7), without the date line polygons being >> > wrapped >> > around the earth. >> > >> > I appreciate that this isn't strictly a postGIS problem, however being >> > faced >> > with the stark choice between splitting my data about the date line >> > (inelegant) or not using Google Earth (unacceptable to users), I don't >> > know >> > where else to turn! >> > >> > Do you know of: >> > a) a way to get the data to render correctly in Google Earth; or >> > b) where else I should ask? >> > >> > Thanks! >> > >> > >> > >> > -- >> > View this message in context: >> > http://postgis.17.n6.nabble.com/Display-GEOGRAPHY-polygons-crossing-date-line-tp5000443.html >> > Sent from the PostGIS - User mailing list archive at Nabble.com. >> > _______________________________________________ >> > postgis-users mailing list >> > [hidden email] >> > http://postgis.refractions.net/mailman/listinfo/postgis-users >> _______________________________________________ >> postgis-users mailing list >> [hidden email] >> http://postgis.refractions.net/mailman/listinfo/postgis-users >> >> >> ________________________________ >> If you reply to this email, your message will be added to the discussion >> below: >> >> http://postgis.17.n6.nabble.com/Display-GEOGRAPHY-polygons-crossing-date-line-tp5000443p5000464.html >> To unsubscribe from Display GEOGRAPHY polygons crossing date line, click >> here. >> NAML > > > > ________________________________ > View this message in context: Re: Display GEOGRAPHY polygons crossing date > line > > Sent from the PostGIS - User mailing list archive at Nabble.com. > > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users > _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
