작성자: 박준규
2023.01.08(일)
Run ROS Master: roscore
Run Turtlesim Node: rosrun turtlesim turtlesim_node
rosrun command runs single nodesRun turtle_teleop_key Node: rosrun turtlesim turtle_teleop_key
You can now command the turtle to move using arrow keys:

Visualizing the Computational Graph using rqt_graph : rosrun rqt_graph rqt_graph
The Graph will appear. We can see that turtlesim subscriber node subscribes to the publisher node teleop_turtle publisher node.
