I realize the ros tutorials from the website of http://www.ros.org/wiki/motion_planning_environment/Tutorials/Tutorial%20A I figure the command "roslaunch pr2_arm_navigation_actions environment_server_right_arm.launch" is used to check collision. But I want to know how to use debug tool such as gdb to find what function I want. Thank you. -- View this message in context: http://ros-users.122217.n3.nabble.com/Which-package-is-used-for-checking-collision-tp951727p953714.html Sent from the ROS-Users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ ros-users mailing list ros-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ros-users