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Cannot use rqt_plot to plot ardrone/navdata

November 11, 2017, 10:51 am

I am new to ros. I just starting working with the tum_simulator, ardrone_autonomy and tum_ardrone packages. I am using the simulation in tum_simulator and not an actual drone. I would like to plot...

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Answer by jayess for I am new to ros. I just starting working with the...

November 12, 2017, 9:27 pm

With `rqt_plot` you need specify what data (message attribute) you're trying to plot, as messages can be composed of many other messages (which the `Navdata` message is). If it were to just plot an...

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Comment by jayess for With rqt_plot you need specify what data (message...

November 13, 2017, 5:27 pm

Also, if you look at https://answers.ros.org/question/72739/cant-plot-some-messages-types-on-rqt_plot/ you'll see that you need to have the message definitions (`cvg_sim_msgs` package) and you may need...

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Comment by jayess for With rqt_plot you need specify what data (message...

November 13, 2017, 5:53 pm

Did you install the `cvg_sim_msgs` package?

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Comment by jayess for With rqt_plot you need specify what data (message...

November 13, 2017, 8:35 am

Are you using a simulator or a real drone? That message is telling you that you're missing the `cvg_sim_msgs` package. This error should be solved using another question.

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Comment by Ishi for With rqt_plot you need specify what data (message...

November 13, 2017, 6:32 am

When I run **rostopic type /ardrone/navdata/vx** I get *ardrone_autonomy/Navdata vx float32*

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Comment by Ishi for With rqt_plot you need specify what data (message...

November 13, 2017, 6:29 am

I tried what you said and i get the error: *TopicCompleter.update_topics(): could not get message class for topic type "cvg_sim_msgs/Altimeter" on topic "/altimeter"* I tried to plot the horizontal...

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