Hi Paul, I don't think GeoTools can do what you want - although I'd be pleased to be corrected by someone else here.
There is code in the unsupported modules for dealing with orthodromic calculations etc. but as far as I know it's work in (occasional) progress. See the wonderfully titled "Fried Egg" page for more info... http://geotools.codehaus.org/Fried+Egg There is the GeodeticCalculator class but it doesn't have a method to calculate intersection points. However, it may be a starting point if you are prepared to do some coding. If so, there is a nice article (with C++ code) about geodetic calculations that includes an algorithm for finding intersection coords on the surface of an ellipsoid. The VisAd library may have something useful in it. It comes with a demo of displaying netcdf data onto a 3d globe - I've run this for fun but haven't ever delved into the code, so I can't advise you on how usable it is. Otherwise google is your friend I guess. Michael ------------------------------------------------------------------------------ _______________________________________________ Geotools-gt2-users mailing list Geotools-gt2-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
