I'm trying to get /rtabmap/grid_map working. I'm using the kinect + fake 2d laserscan method in the tutorial, and there is data being published to /scan
When I rostopic echo /rtabmap/grid_map, nothing is displayed.
I expected that if the subscribe_laserScan argument is on, rtabmap will output a 2d occupancy grid map under /rtabmap/grid_map. Is that incorrect? What other settings could affect grid_map?
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