Gene Buckle writes: > > After a bit of experimentation, I see little benefit in the 1arcsec > > data for our needs. We can't even come any where close to rendering > > the full 3arcsec data. We are talking about preserving the top 1% > > most important data points from the 3 arcsec data. For the 1arcsec > > data we'd only be able to preserve about 0.1% of the original data. > > So at the levels of detail we use, 3arcsec data is *more* than > > enough. Using 1arcsec data would still be nice, but probably not > > noticibly nicer. > > Sorry for the lame question, but how far are the sample points apart from > each other in feet with the 3 arc second data? How far is it for the 1?
1 arcsec = approximately 30 meters = approximately 100 feet. 3 arcsec = approximately 90 meters = approximately 300 feet. The points are on the lat/lon grid lines so the horizontal spacing becomes smaller as you get further away from the equator. Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
