That's was my conclusion "a potential misunderstanding here".
Your system is more a simulator dedicated to meteorologist engineer.
To fly within Flightgear we have a lot of ready made aircraft model , we are
not obliged to make the aircraft.
With your local weather system we must build the weather., we don't have any
"ready" weather, but to go to the Global weather with the real Metar.
Why don't you offer some very good scenari. ?
thanks.
2011/3/24 <[email protected]>
> > however just try to modify the wind kt within the local weather tile gui,
> > iget nasal error
>
> After some reflection and a similar problem discussed in the forum, I
> think I start to see a potential misunderstanding here.
>
> In an integrated weather system, there's no way to 'just modify the wind'
> because everything is tied with everything else.
>
> Take the case of a weather front: That's an airmass moving against another
> airmass with different properties, since air movement is the wind, the
> front is roughly perpendicular to the wind, i.e. you can see by looking at
> a cloud photograph how the large-scale air movement is even without
> observing movement of individual clouds. Thus, if you see a weather front
> and want to change the wind by 60 degrees, you're not asking for the
> windfield to be changed only, you are asking for the whole visible cloud
> configuration to be rotated by 60 degrees.
>
> You could think of using a rotation matrix, recompute all coordinates in
> local Cartesian approximation and be done. Unfortunately, weather feels
> terrain. So you might rotate clouds from a low region into a high region
> and vice versa, thus creating implausible layer altitudes above ground -
> which you don't want. Therefore you need to recompute the terrain
> elevation and correct the altitude of every cloud you rotate.
>
> Unfortunately you're still not done, because for convective clouds you may
> change the whole distribution pattern - you may rotate clouds from a city
> (where many convective clouds are expected) to open water (where only few
> can occur) - thus you have to recompute the whole interaction of the
> system of thermals and convective clouds with the terrain.
>
> So now we have to recompute essentially all cloud positions in potentially
> 120x120 km area just because we changed the wind. If you have dynamical
> weather on, in addition you need to rotate a lot of plane, wind and view
> co-moving coordinate systems, internal weather and windfield interpolation
> points and a lot of other important technical, though invisible stuff.
>
> Basically, you need to recompute almost everything.
>
> Which is why Local Weather Tiles is a launcher gui, not a runtime
> configurable thing. I guess it's the same reason that Flightgear doesn't
> allow to change the plane at runtime. If you want different weather, you
> need to end the running system and start a new one. The gui is actually
> supposed to tell you that, but that may not happen in every instance.
>
> I suspect that you have tried to use the gui as if it would allow runtime
> changes, have discovered a way that doesn't trigger the warning, and that
> then leads to errors.
>
> Cheers,
>
> * Thorsten
>
>
>
> ------------------------------------------------------------------------------
> Enable your software for Intel(R) Active Management Technology to meet the
> growing manageability and security demands of your customers. Businesses
> are taking advantage of Intel(R) vPro (TM) technology - will your software
> be a part of the solution? Download the Intel(R) Manageability Checker
> today! http://p.sf.net/sfu/intel-dev2devmar
> _______________________________________________
> Flightgear-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/flightgear-devel
>
--
Best regards,
Henri, aka Alva
Official grtux hangar maintainer
------------------------------------------------------------------------------
Enable your software for Intel(R) Active Management Technology to meet the
growing manageability and security demands of your customers. Businesses
are taking advantage of Intel(R) vPro (TM) technology - will your software
be a part of the solution? Download the Intel(R) Manageability Checker
today! http://p.sf.net/sfu/intel-dev2devmar
_______________________________________________
Flightgear-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/flightgear-devel
