How to use the map generated in Rviz from a Gazebo simulation?
I am simulating a 3-robot system in Gazebo 11. All three robots are turtlebot3 and I am working on ROS2 Foxy and Ubuntu 20.04. I have a map being generated in RViz but I do not know what to do next with the map. My goal is to write a code to merge the maps of the 3 robots together once I am able to get the map data