Hi Sam: Not sure about the "normal vector" you mention, but as far as the ground elevation you can get that off of the charts (maps) provided by the U.S.G.S.
For some areas there are CD ROMS available with (for example all the state of California as 7.5 min topo maps. The one that I have is from the National Geographic Society. (see http://www,topo.com for a very nice program! I use that program with FlightGear acting as a GPS reciever to get the airplane (simulator) location overlayed on the chart. A moving map display!!). jj Sam Varner wrote: > How can I get the ground elevation and normal vector for a particular > longitude and latitude? > > _______________________________________________ > Flightgear-devel mailing list > [EMAIL PROTECTED] > http://mail.flightgear.org/mailman/listinfo/flightgear-devel _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
