How to get ira_laser_tools laserscan_multi_merger to subscribe to laser scans?
I'm using the laserscan_multi_merger node from the ira_laser_tools package to combine 2 laser scans. I have demonstrated this working well once but, for some unknown reason, the nodes appears to have stopped subscribing to the individual scan topics. However, the node is still connected correctly to publish a merged scan but this is empty without the individual scan connections!
In this question, suggestions are made to do with the node timing out if it can't subscribe to the individual scans straight away and source code edits are proposed to add a delay. I'm also not sure what role the use_sim_time parameter plays in Gazebo too.
I'd prefer not to edit the laserscan_multi_merger cpp file if possible and just get it working again, as I previously had. I'm unsure what I've changed to cause this.
Does anyone have any suggestions?
