Rud, Yes, it seems like the tools I find always want odometry. I have read some discussions about using GPS only but they get complicated quickly. I suspect that the issue is that typical GPS data is very noisy and more input is needed to provide a usable position. I already have very usable position and pose data. --- [Visit Topic](https://discourse.ros.org/t/tractobots-my-attempts-at-field-robots/1486/14) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: