Easiest way to show travelled path on gmapping generated map

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Thanks. I haven't found this answer before.

Thank you very much again. Works like a charm. BTW. I was unable to install hector_slam (hector_common, actually). hector_roscpp_introspections crashes saying: introspection.cpp:225: error: ‘struct boost::filesystem::path’ has no member named ‘native’. Any solutions? Diamondback, Ubuntu 10.04.

Oh ok, thanks for the heads up, I'll investigate this.

Also, I had to increase time ROS waits for /map -> base_link in hector_trajectory_server, trajectoryUpdateTimerCallback to ros::Duration dur (1.5); Otherwise poses container in /trajectory message was mostly empty in my system. In case people are using slower machines, this might be necessary.

I would also uncomment ROS_ERROR in the aforementioned method to leave a hint for users struggling with the same issue. But again, thanks for the software - hope constructive comments are always appreciated :).