most anoying error

[bomber]

Nasal getprop: property /accelerations[0]/pilot[0]/z-accel-fps_sec[0] is NaN

[IAHM-COL]

Don't know what is that for (what your goal is)
But sometimes I just send a conditional to verify a property with nasal, and avoid code mess

it looks kinda like this

Code: Select all

if (is.valid (property---)){
getprop (property(
}


[IAHM-COL]

the example. accurately is:

Code: Select all

if(getprop('/engines/engine[1]/thrust_lb')!=nil) {
    setprop('/instrumentation/mfd/thrust1', getprop('/engines/engine[1]/thrust_lb') / 2000);
  }


[bomber]

I'm not writing nasal... this is the error message I get from my current fdm.

[IAHM-COL]

I did not know that FDMs made getprop nasal codes.
Thus, I suspect the problem is not inherently inside the FDM you are modifying.

[jwocky]

Where did you get this? It's definitively not from the FDM but from some Nasal listening in on properties.

[bomber]

I get it in my debug window once FG has crashed

[jwocky]

Okay, which plane? When does it happen, a hint about the situation in which this error comes up?

[bomber]

It's my new experimental fdm for the beagle.... and normally occurs when the plane is spinning out of control.

[jwocky]

I think, you are looking for a nasal listener and the error happens in the routine the listener calls. Can be it is one of the automatically loaded Nasals from FGDATA, those go also worse version by version.