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2019-05-20 01:29:29 -0500	marked best answer	laser scan topic i install ros indigo desktop full and Turtlebot2 Ubuntu Package . when i do `$rostopic list` i cant find `/laser/scan` topic . there's something like additional installation or other name of laser scan topic ? listed topics : /camera/depth/camera_info /camera/depth/image_raw /camera/depth/points /camera/parameter_descriptions /camera/parameter_updates /camera/rgb/camera_info /camera/rgb/image_raw /camera/rgb/image_raw/compressed /camera/rgb/image_raw/compressed/parameter_descriptions /camera/rgb/image_raw/compressed/parameter_updates /camera/rgb/image_raw/compressedDepth /camera/rgb/image_raw/compressedDepth/parameter_descriptions /camera/rgb/image_raw/compressedDepth/parameter_updates /camera/rgb/image_raw/theora /camera/rgb/image_raw/theora/parameter_descriptions /camera/rgb/image_raw/theora/parameter_updates /clock /cmd_vel_mux/active /cmd_vel_mux/input/navi /cmd_vel_mux/input/safety_controller /cmd_vel_mux/input/switch /cmd_vel_mux/input/teleop /cmd_vel_mux/parameter_descriptions /cmd_vel_mux/parameter_updates /depthimage_to_laserscan/parameter_descriptions /depthimage_to_laserscan/parameter_updates /gazebo/link_states /gazebo/model_states /gazebo/parameter_descriptions /gazebo/parameter_updates /gazebo/set_link_state /gazebo/set_model_state /joint_states /laserscan_nodelet_manager/bond /mobile_base/commands/motor_power /mobile_base/commands/reset_odometry /mobile_base/commands/velocity /mobile_base/events/bumper /mobile_base/events/cliff /mobile_base/sensors/bumper_pointcloud /mobile_base/sensors/core /mobile_base/sensors/imu_data /mobile_base_nodelet_manager/bond /odom /rosout /rosout_agg /scan /tf /tf_static
2018-06-13 07:02:50 -0500	received badge	● Famous Question (source)
2018-03-18 16:11:58 -0500	commented answer	laser scan topic Hello dljubic Ya i get it , thanks a lot it is very useful.
2018-03-18 16:11:12 -0500	answered a question	laser scan topic Hello dljubic Ya i get it , thanks a lot it is very useful.
2018-03-18 06:33:01 -0500	received badge	● Notable Question (source)
2018-03-17 19:01:51 -0500	received badge	● Popular Question (source)
2018-03-17 03:08:44 -0500	edited question	laser scan topic laser scan topic i install ros indigo desktop full and Turtlebot2 Ubuntu Package . when i do $rostopic list i cant fin
2018-03-17 03:08:44 -0500	received badge	● Editor (source)
2018-03-17 02:57:32 -0500	edited question	laser scan topic laser scan topic i install ros indigo desktop full and Turtlebot2 Ubuntu Package . when i do $rostopic list i cant fin
2018-03-17 02:55:13 -0500	asked a question	laser scan topic laser scan topic i install ros indigo desktop full and Turtlebot2 Ubuntu Package . when i do $rostopic list i cant fin
2018-02-15 16:34:46 -0500	answered a question	$ printenv \| grep ROS command not found i have the same problem . output of which printenv is "/usr/bin/printenv" and which grep is "/bin/grep"
2018-02-15 16:13:50 -0500	received badge	● Supporter (source)