Specifying 2D nav goal in rviz for more than one robot?
I have a user interface were I use the "2D Nav Goal" in rviz to specify goal positions for a robot. Now I need to start two rviz and specify the foal for different robots. Hoq can I do that? The goal is published on "/move_base_simple/goal" and I cannot find any way to specify a namespace for that topic.