Playing a rosbag

To play back a rosbag use the following commands:

1. Start up roscore:

roscore

2. Open a new terminal and set use_sim_time to true:

rosparam set use_sim_time true

3. Open a new terminal and start the rosbag:

roscd tractor/
cd bags/
rosbag play -l --clock XXX.bag

4. Open a new terminal and start localization:

roslaunch tractor localization.launch