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Thank u dornhege and ParitoshKelkar.

@ParitoshKelkar: My subscriber on machine B does not do publishing. I get u. Thank you for your answer.

@dornhege: Sorry, I am not clear enough. Below is my setup:

Both machines are on the same network.

Machine A: Is the master ros uri. Is connected to a xv lidar and publishes scan data

Machine B: Subscribes to scan data. I wanted to make use of this data to show it on rviz.

However, when i run rviz, instead of showing the subscribed data, rviz subscribes again to xv lidar node on machine A. Paritosh has provided a solution to this which is to publish the subscribed data.

I wish to also ask if it is possible to run rviz on machine B and for rviz to subscribe data direct from machine A's lidar node. It seems possible, but I received an error status saying Fixed Frame [map] does not exist.

Thanks alot.