[ros-users] slam_gmapping with two hokuyo_node

I have a robot with hokuyo_node one on front and another on back.
Is it possible to use two hokuyo nodes for building map using
slam_gmapping packages?
I launched two hokuyo_nodes that send sensor_msgs/LaserScan to the
same /base_scan topic, but it does not seem to work.

Thanks

--
Manabu Saito, JSK lab,University of Tokyo
saito@jsk.t.u-tokyo.ac.jp