rostopic list

asked 2021-04-08 07:08:36 -0500

bela gravatar image

Hy!:) If I want to visualize a topic, but if I type in a rostopic list, I have few topics, do I have to first subscribe to the topic I want and then visualize? I want to clarify this question because of my initial knowledge.

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Elaborate "visualize". Are you perhaps looking for rostopic echo?

abhishek47 gravatar image abhishek47  ( 2021-04-08 08:47:53 -0500 )edit

As I know, I prefer to use the rostopic pub command. I have bag files and want to visualize it for them

bela gravatar image bela  ( 2021-04-08 09:23:29 -0500 )edit

Can you maybe elaborate more or give a short example or what you have, please? Still hard to understand what you are trying to do.

knxa gravatar image knxa  ( 2021-04-09 03:48:50 -0500 )edit

I want to visualize the topic of a bag file, maybe you can help with that?

bela gravatar image bela  ( 2021-04-09 04:03:23 -0500 )edit

You are not providing more details. I can only suggest what abhishek47kashyap already did:

rosbag play BAGFILE
rostopic echo TOPICNAME
knxa gravatar image knxa  ( 2021-04-09 05:21:45 -0500 )edit
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