repaired issue with NaN
repaired issue with NaN

TurtleRover/Turtle-Rover-Mission-Control,TurtleRover/Turtle-Rover-Mission-Control,TurtleRover/Turtle-Rover-Mission-Control,TurtleRover/Turtle-Rover-Mission-Control,TurtleRover/Turtle-Rover-Mission-Control,TurtleRover/Turtle-Rover-Mission-Control