Thanks Jon S. Berndt for your help, but i'm unfortunately working on ubuntu.

By the way, Anders Gidenstam's method worked fine for me.

2009/8/16 Jon S. Berndt <jonsber...@comcast.net>

>  I’ve posted a new version of the JSBSim reference manual with much more
> included on input/output and scripting. You might be interested in the part
> on the stripchart application I described below.
>
>
>
> Jon
>
>
>
>
>
> *From:* Jon S. Berndt [mailto:jonsber...@comcast.net]
> *Sent:* Saturday, August 15, 2009 4:42 PM
> *To:* 'FlightGear developers discussions'
> *Subject:* Re: [Flightgear-devel] Printing Logging Values on FlightGear
> Screen
>
>
>
> Greetings,
>
>
>
> It may not be straightforward, but I can tell you how to send output from
> any JSBSim aircraft model in FlightGear to a stripchart program, which plots
> data at runtime. But, the stripchart program only runs on a Windows machine.
> It communicates via socket, so you could send the data from
> FlightGear/JSBSim running on any machine to a Windows machine running the
> stripchart application.
>
>
>
> You can get the stripchart application here:
>
>
>
> www.jsbsim.org/stripchart.zip
>
>
>
> You need to have an <output> element in your JSBSim aircraft definition
> file. I will be posting an updated version of the JSBSim Reference Manual in
> the next day or two. I will try to add some information about this
> Stripchart application.
>
>
>
> I really should modify this application to support any arbitrary data
> stream coming from FlightGear as well as JSBSim, because it’s such a darned
> useful tool. I’m sure there are other ways to do this, too, using Matlab or
> something.
>
>
>
> I might be willing to send the code to someone if there is a serious desire
> to port it, but it’s an old Borland C++Builder application u sing Steema’s
> TeeChart library.
>
>
>
> Jon
>
>
>
>
>
>
>
> *From:* Behlül UÇAR [mailto:ucarbeh...@gmail.com]
> *Sent:* Saturday, August 15, 2009 7:33 AM
> *To:* flightgear-devel@lists.sourceforge.net
> *Subject:* [Flightgear-devel] Printing Logging Values on FlightGear Screen
>
>
>
> Hi, I'm researching for weeks to understand FlightGear system.
>
> First, I tried to examine the source code of FlightGear project, it was
> hard though. Although I understood some basic things, such as which source
> file is needed for what, I couldn't go into details.
>
> Then, I researched the wiki page and saw that there is an API system called
> property tree, it can be accessed by C++, XML or Nasal scripting language. I
> studied Nasal a bit and learned how to use it.
>
> Actually what i want to do is that I want to print some logging properties
> directly on the FlightGear screen. I couldn't see any information how to
> print something directly on the FlightGear screen. I can handle properties
> with Nasal and show them on terminal but as i said i want them to show up on
> gamescreen.
>
> If anyone knows, can you just explain how I can do it, at least which
> source file? Or is there a declared API function to do that?
> Any help would be appreciated, thanks!!!
>
>
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