How does ros determine orientation?

asked 2017-04-04 18:09:56 -0500

Bill5785 gravatar image

updated 2017-04-04 18:10:57 -0500

I've got odometry data and it contains x,y,z odometry and orientation quarternions. But I dont know how does ros determine the x,y,z. I mounted lidar on top of my robot. So is x the same direction as the front of my lidar?

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