rqt_plot not publishing showing anything

Question

rqt_plot not publishing anything even thought there is data being published on the topic "mytopic". When I do rostopic echo /mytopic I get continious output with parameters changing given as follows(just posted a script out of the big output I am getting) :

  id: 3
    vs: 4

  - 
    id: 10
    vs: 1

  - 
    id: 13
    vs: 6

  - 
    id: 18
    vs: 1
 
  - 
    id: 19
    vs: 1
  
  - 
    id: 21
    vs: 8

  - 
    id: 27
    vs: 1

  - 
    id: 31
    vs: 1

However when I do rosrun rqt_plot rqt_plot /mytopic nothing is ouputted. Can somebody help me with this.

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Originally posted by Gudjohnson on ROS Answers with karma: 100 on 2013-07-25

Post score: 2

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Original comments

Comment by 130s on 2013-08-07:
What data types are the members of your topic? Are they numeric?

Answer 1

Try:

$ rqt_plot /%TOPIC_NAME%/%FIELD_NAME%

In your case:

$ rqt_plot /mytopic/id /mytopic/vs

Hope this works.

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Originally posted by 130s with karma: 10937 on 2013-07-25

This answer was ACCEPTED on the original site

Post score: 2

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Original comments

Comment by Gudjohnson on 2013-07-25:
unfortunately this does not work. I do not understand why it does not work. For rosrun rqt_graph rqt_graph I get a graph in which I have one note which is publishing and subscribing to my /mytopic. rqt_plot should output the data being published on a topic but it does not show anything althought "rostopic echo /mytopic" shows that data is being published on mytopic.

Comment by 130s on 2013-08-07:
I'm not sure either. Try rosdep install rqt_plot (this installs missing dependency if any) and tell us the result.

Answer 2

I know this is an old thread but I just want to post it here in case it would help anyone...

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In order for rqt_plot to plot your topic, it should include a timestamp. In other words, add a header to your customized message and write my_msg.header.stamp in it, then rqt_plot should work.

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Originally posted by Domi with karma: 21 on 2022-11-29

This answer was NOT ACCEPTED on the original site

Post score: 2