(It is a plugin for rqt, which is standard GUI tool of ROS.)
It is similar to rqt_reconfigure, which is for parameters, but rqt_ez_publisher
is for topics.
Although rqt_reconfigure requires some config files,
rqt_ez_publisher needs nothing. All you have to do is select a topic from list.
This video shows how it works.
For more detail, please read wiki page.
Any feedback is welcome. Please make a issue at GitHub.
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OTL