How to use?

[kevintsq]

I used catkin_make to build the package successfully, but it failed to launch. Where was I wrong?

pi@raspberrypi:~ $ roslaunch obstacle_cluster_detection /home/pi/catkin_ws/src/obstacle_cluster_detection/launch/ClusterCounter.launch
RLException: [/home/pi/catkin_ws/src/obstacle_cluster_detection/launch/ClusterCounter.launch] is neither a launch file in package [obstacle_cluster_detection] nor is [obstacle_cluster_detection] a launch file name
The traceback for the exception was written to the log file
pi@raspberrypi:~ $ roslaunch cluster_counter /home/pi/catkin_ws/src/obstacle_cluster_detection/launch/ClusterCounter.launch
RLException: [/home/pi/catkin_ws/src/obstacle_cluster_detection/launch/ClusterCounter.launch] is neither a launch file in package [cluster_counter] nor is [cluster_counter] a launch file name
The traceback for the exception was written to the log file

[kevintsq]

Sorry, the launch file does not need to be an absolute path.