ros2 node list empty
When trying to echo what certain topics are publishing I was executing ros2 topic echo <name-of-the-topic> and it wasn't able to echo nothing at all. I used rqt-graph to see if the topics and nodes appeared there and they do, so I used both commands ros2 topic list and ros2 node list to see if they appeared there, and they don't.
To be accurate, when using ros2 node list the list appears empty and when using ros2 topic list 2 values appear: \parameter_events and \rosout.
You'll need to provide more detail here. Is this a multi-machine setup? Is there some node you're running that should be providing data?
If
ros2 topic listis showing only\parameter_eventsandrosoutonly, then I am afraid there are no nodes running@cst0 It is all in the same machine, I'm just running a simulation in Gazebo where I'm spawning a robot and gazebo publish some info of various sensors.
Regarding @aarsh_t, when I use
rqt-graphnodes and topics related to the simulation do appear.Can you upload the screenshot of both in parallel?
Can you pls show the output of
ros2 topic info <name-of-the-topic>andros2 topic info <name-of-the-topic> -vAlso added you points so you can display the
rqt-graphrequested by @aarsh_t.@osilva@aarsh_t basically I decided to delete my current installation (actually, not that much of an installation, but a build) and decided to install through apt and it is working fine for now
Thank you @pablo.arandarod for the update.