Did you take a look at the Proj4J plugin? That should provide any EPSG:* projection. Cheers On Mar 3, 2013 10:54 AM, "Jochen Topf" <joc...@remote.org> wrote:
> Hi! > > I am currently working with Christoph Hormann on improving the data for > Antarctica. See http://wiki.openstreetmap.org/wiki/Antarctica for more > info. > > One problem is that Antarctica doesn't work well in EPSG:4326 plate carree > projection. (Mercator is right out because it stops at about 85° South.) > > Yes, we can edit the data in JOSM, but the nearer you get to the pole the > more > distortions you get. This is problematic when editing buildings for > instance, > because they are not rectangular in JOSM. But this is also a problem when > deriving data from satellite images. There are WMS services with satellite > images that we could use that allow EPSG:3031 polar stereographic > projection. > But JOSM doesn't support that projection. > > The problem with using 4326 is that when digitising from an image you will > probably not use the right detail. Normally you would space out the nodes > along some feature evenly, but with so much distortion you can't see what > an even distribution would be. The result is that the features would look > ragged in some map projections. > > How difficult would it be to support EPSG:3031 in JOSM? > > Jochen > -- > Jochen Topf joc...@remote.org http://www.remote.org/jochen/ > +49-721-388298 > > _______________________________________________ > josm-dev mailing list > josm-dev@openstreetmap.org > http://lists.openstreetmap.org/listinfo/josm-dev > _______________________________________________ josm-dev mailing list josm-dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/josm-dev
