> The metar realwx controller checks every 60 seconds for a station > reporting > metar and loads that data if the station id has changed since the last > check. > It also rechecks the metar every 15 minutes for the unchanged station.
Okay, so every 60 seconds, the controller * determines what the nearest station given current location is * if that station has changed and is closer than 10.000 miles, a METAR is retrieved * if that station has not changed, but 15 minutes have passed and the station is closer than 10.000 miles, a METAR is retrieved * otherwise no METAR is fetched * and wait another 60 seconds This means that if I use a 1/distance^n interpolation and have one weather station, a second one always has a weight factor of 1/2 when it appears... which explains why my winds jumped so suddenly before I started to fade new stations in with a time-dependent weight. But that's actually good, because on a transatlantic flight this means I will get to know the destination weather hundreds of miles in advance, so there is ample time to gradually bias the offline weather system into the right pattern. Thanks a lot! Cheers, * Thorsten ------------------------------------------------------------------------------ Free Software Download: Index, Search & Analyze Logs and other IT data in Real-Time with Splunk. Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. http://p.sf.net/sfu/splunk-dev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
