A quick question for any of you.  Can Flight Gear be used as a database for
ground elevation?  Could I query it with earth coordinates and ask it to
return the local elevation of the ground with respect to sea level?  Would
this be difficult to implement?

Thanks,

Bob
[EMAIL PROTECTED]


On 11/13/08 4:18 PM, "Michael Smith" <[EMAIL PROTECTED]> wrote:

> Curtis Olson wrote:
>> How much memory do you have?  Is it possible to add some memory to get
>> yourself up to maybe at least 512Mb total?  If you are running this
>> under linux, there are easy ways to look at your total system memory,
>> how much memory is out in swap, how much memory the FlightGear
>> application is taking, etc.  Probably similar tools under windows, but
>> I'm less familiar with system level debugging there.
>> 
>> On Thu, Nov 13, 2008 at 3:49 PM, Michael Smith wrote:
>> 
>>     Michael Smith wrote:
>>> Curtis Olson wrote:
>>> 
>>>> In the pre-osg version, I believe the cache size was scaled
>>     relative
>>>> to the visibility (i.e. for some particular visibilty, a certain
>>>> number of tiles need to be loaded in order to cover all the visible
>>>> earth, and then the cache was set to some number higher than
>>     that so
>>>> that we wouldn't get thrashing.)  I don't recall the exact
>>     formula ...
>>>> maybe something like 2*n + 1 (where n is the number of visible
>>>> tiles.)  I don't know if this concept was carried forward to
>>     the OSG
>>>> version ,but you might try limiting visibility and that should
>>     reduce
>>>> the number of tiles being loaded.
>>>> 
>>>> Regards,
>>>> 
>>>> Curt.
>>>> 
>>>> 
>>>> On Wed, Nov 12, 2008 at 4:51 PM, Michael Smith
>>     <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>>>> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>>
>>     wrote:
>>>> 
>>>>     Michael Smith wrote:
>>>>> I have tried plenty of things to get fg to run on this
>>     old piece of
>>>>> junk but I am getting tired only being able to fly water
>>     routes
>>>>     (i.e.
>>>>> island to island). If I try to fly over land, it gets
>>     slower and
>>>>> slower over time, so I want to know how to lower how much
>>>>     scenery gets
>>>>> cached (not affraid to edit code here).
>>>>> 
>>>>> Thanks
>>>>> 
>>>>> Michael Smith <[EMAIL PROTECTED]
>>     <mailto:[EMAIL PROTECTED]> <mailto:[EMAIL PROTECTED]
>>     <mailto:[EMAIL PROTECTED]>>>
>>>>> 
>>>>> 
>>>>     Anybody? I really want to know this.
>>>> 
>>>>    
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>>>> 
>>>> 
>>>> --
>>>> Curtis Olson: http://baron.flightgear.org/~curt/
>>     <http://baron.flightgear.org/%7Ecurt/>
>>>> <http://baron.flightgear.org/%7Ecurt/>
>>>> 
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>>>> 
>>> Hmm, Ok, I will try this, but if there is another way (I
>>     wouldn't want
>>> IFR flight on a shiney bright day at TNCM :), I would like to know.
>>> Thanks Curt.
>>> 
>>> 
>>> Michael Smith <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
>>> 
>>> 
>>> 
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>>> 
>>     Ok, I tried a short route in my 777 (KSFO - KATL) and had 10 fps
>>     leaving
>>     KSFO ( that is shocking btw, I only ever get 1 there) and through the
>>     flight at FL350 i get between 7 and 15 FPS, but once I came down where
>>     the ground could be seen, the fps went and stayed at 1 - 2 fps and
>>     I had
>>     to kill because I can't land that. Any other suggestions on how I
>>     could
>>     do this or any other way (I have disabled everything in Rendering
>>     Options besides Display FPS and Show Chat Messages and have had
>>     model-hz
>>     set to 90) I could make fg stop munching my ram to pieces?
>> 
>>     --
>>     Michael Smith <[EMAIL PROTECTED]
>>     <mailto:[EMAIL PROTECTED]>> (mdsmith2)
>> 
>> 
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>> 
>> 
>> 
>> -- 
>> Curtis Olson: http://baron.flightgear.org/~curt/
>> <http://baron.flightgear.org/%7Ecurt/>
>> ------------------------------------------------------------------------
>> 
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>>   
> I have 376 MB of physical ram and 2 gigs of swap (I know, its a little
> bit) and plan to get a gig of DDR ram eventually but will take too long
> and I would like something to keep me flying until I can get it. Most of
> the time Flightgear takes up to 97% of total memory (X11 takes the other
> 2% and misc. takes the rest)(I use Linux FTR).



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