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extract flight data in csv format and then read it by matlab

Connecting two computers, using generic protocol, connecting with Matlab?

extract flight data in csv format and then read it by matlab

Postby nima.nader123 » Tue Jan 16, 2018 6:23 am

hello every body
I hope you all have a good day ahead .
I am pretty beginner in working with flightgear .
i need to have a fly with flightgear and record data in the csv file and then read that data via Matlab.
I take a glance on generic protocol, but i could not understand a lot :( :( :cry:
could you please help me to do that ?

Thanks in advance for your replies!

regards
Nima
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Re: extract flight data in csv format and then read it by ma

Postby jam007 » Tue Jan 16, 2018 10:22 am

One way is to use Nasal to write the properties you want to a file.
See example GPX-logger
For more on properties see here and here
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Re: extract flight data in csv format and then read it by ma

Postby wkitty42 » Tue Jan 16, 2018 10:28 am

unless you really need networking protocol capabilities, you could just modify the craft you're going to fly and have it log the data to a file instead of over engineering things... then simply transfer that file to the matlab machine and use it there... take a look at the c172p's xml files... specifically the end of c172p.xml... there's a commented out section that creates a CSV file of the given properties... you'll do pretty much the same thing and no protocols, networking or nasal needed...

always remember and never forget, KIS... Keep It Simple ;)
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."
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Re: extract flight data in csv format and then read it by ma

Postby jam007 » Tue Jan 16, 2018 1:37 pm

:idea: All these hidden gems in FG...
Code: Select all
    <output name="JSBout172C.csv" type="CSV" rate="60">
      <property> aero/qbar-psf </property>
      <property> accelerations/udot-ft_sec2 </property>
      <property> accelerations/vdot-ft_sec2 </property>
      <property> accelerations/wdot-ft_sec2 </property>
      <property> accelerations/a-pilot-x-ft_sec2 </property>
      <property> accelerations/a-pilot-y-ft_sec2 </property>
      <property> accelerations/a-pilot-z-ft_sec2 </property>
      <property> accelerations/n-pilot-x-norm    </property>
      <property> accelerations/n-pilot-y-norm    </property>
      <property> accelerations/n-pilot-z-norm    </property>
      <rates> ON </rates>
      <velocities> ON </velocities>
      <forces> ON </forces>
      <moments> ON </moments>
      <position> ON </position>
      <fcs> OFF </fcs>
      <propulsion> OFF </propulsion>
      <aerosurfaces> OFF </aerosurfaces>
      <fcs> OFF </fcs>
      <ground_reactions> OFF </ground_reactions>
    </output>


Where Here is the documentation ?
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