Re: [Flightgear-devel] Weather interpolation patch
* Stuart Buchanan -- Thursday 26 July 2007: It interpolates METAR changes over time as follows: Committed, thanks. This was sorely missing, but I'm afraid we'll get complaints because the real-life-weather doesn't work any more. (No more obvious weather changes shaking the aircraft. ;-) m. - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Weather interpolation patch
On 8/3/07, Melchior FRANZ [EMAIL PROTECTED] wrote: * Stuart Buchanan -- Thursday 26 July 2007: It interpolates METAR changes over time as follows: Committed, thanks. This was sorely missing, but I'm afraid we'll get complaints because the real-life-weather doesn't work any more. (No more obvious weather changes shaking the aircraft. ;-) A good reply would be, find a real-world crosswind situation and try to land. :-) - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Weather interpolation patch
On Fri 3 August 2007 18:49, Hans Fugal wrote: On 8/3/07, Melchior FRANZ [EMAIL PROTECTED] wrote: * Stuart Buchanan -- Thursday 26 July 2007: It interpolates METAR changes over time as follows: Committed, thanks. This was sorely missing, but I'm afraid we'll get complaints because the real-life-weather doesn't work any more. (No more obvious weather changes shaking the aircraft. ;-) A good reply would be, find a real-world crosswind situation and try to land. :-) But you can fly through a storm and get these changes shaking the Aircraft, isn't it ? -- Gérard - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Weather interpolation patch
On Fri, 2007-08-03 at 19:06 +0200, gh.robin wrote: On Fri 3 August 2007 18:49, Hans Fugal wrote: On 8/3/07, Melchior FRANZ [EMAIL PROTECTED] wrote: * Stuart Buchanan -- Thursday 26 July 2007: It interpolates METAR changes over time as follows: Committed, thanks. This was sorely missing, but I'm afraid we'll get complaints because the real-life-weather doesn't work any more. (No more obvious weather changes shaking the aircraft. ;-) A good reply would be, find a real-world crosswind situation and try to land. :-) But you can fly through a storm and get these changes shaking the Aircraft, isn't it ? From http://www.airnav.com/airport/KHIF : - CAUTION: HVY AIRLINE AND CIV TFC ON APCH AND DEP. STRICT ADHERENCE TO ATC ALT AND HDG MANDATORY. EXP TURBULENCE APCH AND LDG RWY 14 DUR MED TO HI SFC WINDS. WIND VELOCITY MAY VARY FR APCH TO DEP END OF RWY. The current weather system usually put the weather wall over the runway, I'm hoping the new interpolation patch is smart enough to change the weather fast enough... Since the two metar sources are only six miles apart I'm hoping the wind change will be very rapid, but harder to detect than the wall method. I haven't really looked at the patch (too many irons in the fire) Ron - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Weather interpolation patch
* Stuart Buchanan -- Thursday 26 July 2007: http://www.nanjika.co.uk/flightgear/Environment.diff [...] If someone could review the code and check it in to CVS if it passes muster, that would be appreciated. I've applied that locally and will test and commit at the weekend if it works. (I'll also fix the abs() bugs. ;-) m. - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Weather interpolation patch
--- Stuart Buchanan wrote: Wind shear cause by METAR updates is a common problem in FG, especially around the San Francisco bay, where there are a large number of airports with METAR, and quite localized weather conditions. As a first attempt to solve this, I've made some simple changes to the environment manager to apply the METAR changes more slowly... A new, improved patch is now available from http://www.nanjika.co.uk/flightgear/Environment.diff It interpolates METAR changes over time as follows: 1) Wind changes are interpolated as vectors, so the change is much more natural than before - no-longer will your aircraft be suddenly shoved to one side. 2) Visibility is interpolated as an X-value, which looks pretty neat. 3) Cloud heights and thicknesses are interpolated if they are close to the aircraft. Cloud textures are not. Many thanks to John Denker for pointing out better interpolation methods, and Melchior Franz for answering my coding questions. If someone could review the code and check it in to CVS if it passes muster, that would be appreciated. -Stuart ___ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/ - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] Weather interpolation patch
Hi All, Wind shear cause by METAR updates is a common problem in FG, especially around the San Francisco bay, where there are a large number of airports with METAR, and quite localized weather conditions. As a first attempt to solve this, I've made some simple changes to the environment manager to apply the METAR changes more slowly, available here: http://www.nanjika.co.uk/flightgear/Environment.diff This doesn't affect the cloud layers (yet), as the METAR data is written straight to the cloud layers, rather than via a config tree. Does anyone have any insight into why this might be? Comments very welcome. -Stuart ___ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/ - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Weather interpolation patch
I once went from reasonable headwind to strong crosswind during short final. It was quite exciting. I am in favor of interpolating weather changes, rather than the wall of weather. On 7/15/07, Stuart Buchanan [EMAIL PROTECTED] wrote: Hi All, Wind shear cause by METAR updates is a common problem in FG, especially around the San Francisco bay, where there are a large number of airports with METAR, and quite localized weather conditions. As a first attempt to solve this, I've made some simple changes to the environment manager to apply the METAR changes more slowly, available here: http://www.nanjika.co.uk/flightgear/Environment.diff This doesn't affect the cloud layers (yet), as the METAR data is written straight to the cloud layers, rather than via a config tree. Does anyone have any insight into why this might be? Comments very welcome. -Stuart ___ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/ - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel -- Hans Fugal Fugal Computing - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Weather interpolation patch
On July 15, 2007 07:27:48 pm Hans Fugal wrote: I once went from reasonable headwind to strong crosswind during short final. It was quite exciting. It is quite annoying. It pretty much defeats the purpose of following glideslope and locolizer. I am in favor of interpolating weather changes, rather than the wall of weather. This problem has been known for years and still haven't been fixed. Ampere - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
