I'm using gmapping to make the map from a prerecorded Rosbag file, which contains laser and TF topics. I'm able to do the map without any problems.
Somehow I need to access the odometry information that was recorded on the Rosbag file to implement one EKF filter, how can I obtain the raw odometry data to use it as a sensor information to fuse it my filter?
I am a little bit lost, some help will be useful. Thanks
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