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How can I run rqt_plot with topics from launchfile?

asked 2016-05-08 05:41:49 -0600

antonio gravatar image

updated 2016-05-08 05:42:41 -0600

I have the following launchfile.

<launch>

<group ns='Axel'>
<node pkg='quad_control' name='coverage_planner' type='coverage_planner.py'/>
<node pkg='quad_control' name='planar_integrator' type='planar_integrator.py'/>
<node pkg='rqt_plot' name='rqt_plot' type='rqt_plot' args='/Axel/pose/x:y:theta'/>
<param name='others_names' type='str' value='Bo Calle David'/>
</group>

</launch>

I expected that rqt_plot would be running with the topics that I specified in the args field. But no, it runs with whatever topic it was running when it was launched the previous time. How can I make rqt_plot run from launchfile with the topics of my choice?

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answered 2021-11-28 07:28:35 -0600

rickstaa gravatar image

updated 2021-11-28 07:48:31 -0600

I will place this here for future reference. The syntax used in the original question is incorrect. I did not check the codebase in 2016/2018 but in 2021, the syntax for specifying topics is as follows:

 rosrun rqt_plot rqt_plot /<ROBOT_NS>/joint_states/effort[0] /<ROBOT2_NS>/joint_states/effort[0]

This can be seen by looking at the code of the rqt_plot/plot.py##L114 plugin. As a result, the correct syntax for doing this form a launch file:

<node pkg="rqt_plot" type="rqt_plot" output="screen" name="rqt_plot" args="/<ROBOT_NS>/joint_states/effort[0] /<ROBOT2_NS>/joint_states/effort[0]"/>
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answered 2018-04-03 00:56:33 -0600

Taylor Cooper gravatar image

I don't have a direct answer to your question and I suspect you've already found an answer in the last 2 years but for the sake of anyone else looking at this it is possible to save an rqt perspective with the topics from your launch file. Ironically this same functionality may be what is causing rqt_plot to remember previous sessions.

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Asked: 2016-05-08 05:41:49 -0600

Seen: 1,536 times

Last updated: Nov 28 '21