> >> Also the above code does not produce a 3D lox model. Is that > because a > >> surface is either 2D or 3D but not both? > > >It has to work in both modes (surface bitmap in 2D, surface bitmap > + > >terrain in loch). You have to enter DTM (elevations) to display > also > >the topographical map in 3D. > > I take you mean if I enter some grid data, even zeros, I should get a (flat) > terrain model in loch? > > Bruce > You're somewhere in NZ? Ill have a look what data might be available. Was down there about 10 years ago and I enjoyed it.
Regards Wolfgang
