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clearing all markers / view in RVIZ remotely

asked 2013-01-28 22:53:00 -0500

Markus Achtelik gravatar image


I'm drawing a lot of markers in rviz to visualize the outcome of an algorithm. As I'm often interrupting/killing it, it's infeasible to keep track of what has been drawn in order to delete it later. Is there any possibility to send something like "wipe" or "clear" to rviz to clear all markers? Currently, I'm sending a message with many markers with action=DELETE but that seems a bit brute force. Is there any better option?

Thanks a lot!

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answered 2013-01-29 04:25:29 -0500

joq gravatar image

If you are setting markers fairly frequently, perhaps you could set an appropriate lifetime in the Marker message.

Then, rviz would erase them after you kill your node.

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Thanks, that could be a workaround. I Just have to think about something when I get a coffee and the algorithm finished in the meantime... ;) It seems there is no other solution (yet)?

Markus Achtelik gravatar image Markus Achtelik  ( 2013-01-30 04:26:40 -0500 )edit

The usual solution is to re-use the marker.ns and values of the obsolete markers, which automatically deletes them as a side-effect.

joq gravatar image joq  ( 2013-01-30 04:31:40 -0500 )edit

answered 2021-04-06 23:19:16 -0500

I recommend to use DELETE_ALL, is simpler and no brute force is required. Here is a snippet:

from visualization_msgs.msg import Marker, MarkerArray
marker_array_msg = MarkerArray()
marker = Marker() = 0
marker.ns = self.marker_ns
marker.action = Marker.DELETEALL
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This solution is especially helpful if the number of markers in the array changes from message to message because the 're-using' solution from the comment above can't be applied in this case.

labude gravatar image labude  ( 2023-03-12 08:08:53 -0500 )edit

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Asked: 2013-01-28 22:53:00 -0500

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Last updated: Apr 06 '21