Hi Alexandre, I've frequently had to deal with data across UTM zone boundaries. With data that only just go over the boundary I've generally reprojected to the dominant zone and put up with the distortion. But once you are more than a few kms into the next zone the changes in feature lengths / areas become significant. In such cases I've resorted to Lambert's conformal conic projection and have found that to be acceptable while still letting me work with metric units.
Hope this helps. Michael 2008/11/4 Alexandre Pretyman <[EMAIL PROTECTED]>: > Hello List, > We are using UTM on our system because it is convenient for us to use metric > units. Our data lies in the middle of an UTM zone and so far we have not yet > thought what would happen if we had to deal with cross zone data. I started > searching the internet and failed to find relevant literature on the > subject. Maybe "dealing with cross zone UTM" were not the right keywords for > the subject. > Anyone knows what happens if I have cross zone (JTS) geometries? I guess > their lengths will be distorted if I try to measure them with the > Geometry.getLength() method. Or maybe there is another solution to use > metric units which I am not aware of which does not have such problems. > Thank you, > Alexandre Pretyman > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great > prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Geotools-gt2-users mailing list > Geotools-gt2-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Geotools-gt2-users mailing list Geotools-gt2-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
