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This is quite similar to #q321354, but in Python and with a different message type.

visualization_msgs/MarkerArray has a single field:

visualization_msgs/Marker[] markers

markers is an unbounded array (or list). For Python, those are mapped onto tuples (see wiki/msg).

Hence, I tried printing msg.markers.pose.position.x and msg.markers.points.x but both of them trigger the same error, msg.markers does not have that attribute

If msg is a MarkerArray, you must first select one of the elements in the markers tuple before you can access any of the properties of that Marker.

So to access the second Marker in the markers tuple, you'd do:

`msg.markers[1].pose.position.x`

(after making sure it actually contains at least two markers, of course)

This is quite similar to #q321354, but in Python and with a different message type.

visualization_msgs/MarkerArray has a single field:

visualization_msgs/Marker[] markers

markers is an unbounded array (or list). For Python, those are mapped onto tuples (see wiki/msg).

Hence, I tried printing msg.markers.pose.position.x and msg.markers.points.x but both of them trigger the same error, msg.markers does not have that attribute

If msg is a MarkerArray, you must first select one of the elements in the markers tuple before you can access any of the properties of that Marker.

So to access the second Marker in the markers tuple, you'd do:

`msg.markers[1].pose.position.x`
msg.markers[1].pose.position.x

(after making sure it actually contains at least two markers, of course)