* Franck M -- Saturday 24 June 2006 10:09:
> I have mix FlightGear with Matlab through the aerosim toolbox in order to 
> put my own joystick and test my dynamic model. I am trying to deal with 
> "zoom" mode into matlab (Nasal request into "my_aircraft-set.xml"). I manage 
> to call a Nasal request "printf" [...]

There is no "printf" in Nasal.  :-P
Of course, you can always make one:

  printf = func(_...) { print(call(sprintf, _)) }



> and "view.decrease()". However it only  
> works when I put the request into the keyboard.xml. I try to put the ligne 
> code into "my_aircraft-set.xml" and launch a UDP socket with the right 
> order, but it's not working...

Then you've put the wrong code there. It's quite common to forget th
<input> or <keyboard> group:

  <PropertyList>
      ...
      <input>
          <keyboard>
              <key n="4">
                  <name>Ctrl-D</name>
                  <desc>Boom.</desc>
                  <binding>
                      <command>nasal</command>
                      <script>controls.trigger(1)</script>
                  </binding>
              </key>
          <keyboard>
      <input>
  <PropertyList>



> By comparison I would like to do a request like when you load the c172 into 
> flightgear, which print  on DOS-screen "Here we are in C172" continuesly (I 
> didn't manage to find this sentence in the code source of flightgear 

And you won't. There's no such code in FlightGear AFAIK, or I would long
have ripped that out. Probably an aerosim feature.

m.

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