2009/9/28 Malm Paul <[email protected]>: > Hi list, > I would like to select data over the north pole inside a polygon of lat/lon > coordinates > For selection I create a polygon from theese coordinates > > 1) 80, -170 > 2) 80, 170 > 3) 75, 10 > 4) 75, -10 > > But is seems that the objects found are from around the pole instead of over > the pole, it does not find any objects over 80° > Is ther a way to get around this?
This is a wild guess, having not looked at the PostGIS code, and not knowing how your data is stored, but I wonder if you need to put in more coords, because depending on the prjection, the lines joining those 4 points could be kind of weird. e.g. 80 0, 80 20, 80 40, 80 50, 80 60... 80 180, 80 -160, 80 -140 ... 80 0 > Kind regards, > Paul > _______________________________________________ > postgis-users mailing list > [email protected] > http://postgis.refractions.net/mailman/listinfo/postgis-users > -- Brian Modra Land line: +27 23 5411 462 Mobile: +27 79 69 77 082 5 Jan Louw Str, Prince Albert, 6930 Postal: P.O. Box 2, Prince Albert 6930 South Africa http://www.zwartberg.com/ _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
