23/03/2020: rqt_plot

In Unit 5 of ROSbasics using python, I tried using the rqt_plot feature as instructed in the theory. But every time i try to input the topic in the GUI an error pops up and the plot shuts down. (Attaching the screen shot of the error). Kindly help me understand what the problem is here.

Regards,
Sanjay.A.T.J

Hi @sanjayatj,

I apologize for the error and the inconvenience it has caused. Could you please try the following:

  • check that you still have the iri_wam simulation running: roslaunch iri_wam_aff_demo start_demo.launch. If it’s running, kill and restart it again.
  • restart rqt_plot and try again.