Hello all, FlightGear's "Tower" view at my local airport (Melbourne's Tullamarine, YMML) is about 300 metres from the actual location of the air traffic control tower. I would like to change the Tower View's "From" location to correspond to the actual location of the tower.
I thought I could do this easily by editing the apt.dat.gz file in FlightGear's ~/Airports/ directory. I gunzip-ed, edited, and gzip-ed the file, and updated the "14" record for YMML as follows: 14 -37.669465 144.830636 0 0 ATC Tower (These coordinates were obtained from Google Earth.) However, when I run FlightGear the view location of the "Tower" view is unchanged. When I browse the internal properties, I find the following values: /sim/tower/airport-id='YMML' /sim/tower/altitude-ft='483' /sim/tower/latitude-deg='-37.66919517' /sim/tower/longitude-deg='144.8451658' Obviously these values do not correspond with those I have inserted into apt.dat.gz. Where does FlightGear obtain these values? The "altitude-ft" parameter is curious. According to this site http://www.airservicesaustralia.com/aboutus/facilities/towers/melbournetower.asp ...the cabin is 120 feet (about 37 metres) above ground. Where does FlightGear get its "483 feet" value? What is the datum for this number? Does FlightGear make use of the apt.dat.gz file to initialise its airport data? If not, what is this file used for? Regards, Greg Hawkes ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Flightgear-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-users
