Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

rqt_plot crash when removing topic (crystal-devel branch)

ros2

asked 2019-03-05 03:52:15 -0500

sainimayankmohan

31 ●4 ●4 ●9 http://sainimayankmohan.com/

updated 2019-03-05 04:00:59 -0500

rqt_plot is crashing when removing a topic from the list of current topics which are being plotted for crystal_devel branch

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2019-03-05 13:14:09 -0500

brawner
581 ●4 ●14 ●15

Unfortunately this is a known bug and it is being tracked in several places. I would recommend you open rqt_plot as a standalone app instead of opening it from within rqt itself. Then run new instances for each set of topics you would like to plot.

ros2 run rqt_plot rqt_plot

The underlying issue is that destroying subscriptions while a node is spinning in another thread is not thread-safe for python: https://github.com/ros2/rclpy/issues/255

RQT specific issue: https://github.com/ros-visualization/...

There are possible workarounds for this issue in rqt, but to provide a stable API it was decided to wait for a fix to rclpy.

edit flag offensive delete link

add a comment

Question Tools

2 followers

Stats

Asked: 2019-03-05 03:52:15 -0500

Seen: 174 times

Last updated: Mar 05 '19

rqt_plot crash when removing topic (crystal-devel branch) edit

1 Answer

Question Tools

Stats

Related questions

rqt_plot crash when removing topic (crystal-devel branch)