Relations between odom coordinate and map coordinate system when create a map?
I‘m using slam_gmapping to create a map.I can successfully created a map,but I don't know the relationship between odom coordinate and map coordinate.
In my opinion,both map and odom coordinate frame is fixed,but when I move my robot,the position of odom coordinate frame changed.!
I want to know why odom frame is changed and how to compute odom's value? Can anyone help me?