Dear Eitan, Thank you so much for the reply. Ok. in fact I created package poineer_zaman and made in it two launch files poineer_configuration.launch and move_base.launch quite according to the instruction given on http://www.ros.org/wiki/navigation/Tutorials/RobotSetup. poineer_configuration.launch file is : ============================ move_base.launch file is: ======================= costmap_common_params.yaml file is: obstacle_range: 2.5 raytrace_range: 3.0 footprint: [[0.3, 0.3], [0.3, -0.3], [-0.3, -0.3], [-0.3, 0.3]] #robot_radius: ir_of_robot inflation_radius: 0.55 observation_sources: laser_scan_sensor laser_scan_sensor: {sensor_frame: laser, data_type: LaserScan, topic: scan, marking: true, clearing: true} ======================== local_costmap_params.yaml file is: local_costmap: global_frame: odom robot_base_frame: base_link update_frequency: 5.0 publish_frequency: 2.0 static_map: false rolling_window: true width: 6.0 height: 6.0 resolution: 0.05 ======================= global_costmap_params.yaml file is: global_costmap: global_frame: /map robot_base_frame: base_link update_frequency: 5.0 static_map: true ======================= base_local_planner_params.yaml file is: TrajectoryPlannerROS: max_vel_x: 0.45 min_vel_x: 0.1 max_rotational_vel: 1.0 min_in_place_rotational_vel: 0.4 acc_lim_th: 3.2 acc_lim_x: 2.5 acc_lim_y: 2.5 holonomic_robot: true =========================== 1)using [/poineer_zaman$roslaunch poineer_configuration.launch] I launch configuration file which activates both myRosAria and sicklms node for navigation and laser data. 2)using [/poineer_zaman$roslaunch move_base.launch] I launch move_base file which initially gives following messages: [ INFO] [1283336071.302542859]: Subscribed to Topics: laser_scan_sensor [ INFO] [1283336071.310063926]: Requesting the map... [ INFO] [1283336071.434206370]: Received a 4000 X 4000 map @ 0.050 m/pix [ INFO] [1283336071.653358675]: map returned [ INFO] [1283336071.663591890]: Initializing likelihood field model; this can take some time on large maps... [ INFO] [1283336072.081203828]: Done initializing likelihood field model. [ WARN] [1283336072.174650070]: Message from [/sicklms] has a non-fully-qualified frame_id [laser]. Resolved locally to [/laser]. This is will likely not work in multi-robot systems. This message will only print once. [ INFO] [1283336072.391845680]: Requesting the map... [ INFO] [1283336072.394272735]: Still waiting on map... [ INFO] [1283336073.534352063]: Still waiting on map... [ INFO] [1283336074.429529868]: Received a 4000 X 4000 map at 0.050000 m/pix [ INFO] [1283336081.986813408]: MAP SIZE: 4000, 4000 [ INFO] [1283336082.010527177]: Subscribed to Topics: laser_scan_sensor [ WARN] [1283336082.198855871]: Costmap2DROS transform timeout. Current time: 1283336082.1988, global_pose stamp: 1283336081.8780, tolerance: 0.3000 [ WARN] [1283336082.398891757]: Costmap2DROS transform timeout. Current time: 1283336082.3988, global_pose stamp: 1283336082.0903, tolerance: 0.3000 [ WARN] [1283336082.608407148]: Costmap2DROS transform timeout. Current time: 1283336082.6083, global_pose stamp: 1283336082.3023, tolerance: 0.3000 [ WARN] [1283336085.398893224]: Costmap2DROS transform timeout. Current time: 1283336085.3988, global_pose stamp: 1283336085.0781, tolerance: 0.3000 [ WARN] [1283336085.598893089]: Costmap2DROS transform timeout. Current time: 1283336085.5988, global_pose stamp: 1283336085.2942, tolerance: 0.3000 [ WARN] [1283336085.809877450]: Costmap2DROS transform timeout. Current time: 1283336085.8098, global_pose stamp: 1283336085.5059, tolerance: 0.3000 [ WARN] [1283336088.598890505]: Costmap2DROS transform timeout. Current time: 1283336088.5988, global_pose stamp: 1283336088.2775, tolerance: 0.3000 [ WARN] [1283336088.798890300]: Costmap2DROS transform timeout. Current time: 1283336088.7988, global_pose stamp: 1283336088.4938, tolerance: 0.3000 [ WARN] [1283336089.009264237]: Costmap2DROS transform timeout. Current time: 1283336089.0091, global_pose stamp: 1283336088.7060, tolerance: 0.3000 [ WARN] [1283336091.798885691]: Costmap2DROS transform timeout. Current time: 1283336091.7988, global_pose stamp: 1283336091.4826, tolerance: 0.3000 [ WARN] [1283336091.998880305]: Costmap2DROS transform timeout. Current time: 1283336091.9988, global_pose stamp: 1283336091.6946, tolerance: 0.3000 [ WARN] [1283336092.210576565]: Costmap2DROS transform timeout. Current time: 1283336092.2105, global_pose stamp: 1283336091.9066, tolerance: 0.3000 [ WARN] [1283336094.998885404]: Costmap2DROS transform timeout. Current time: 1283336094.9988, global_pose stamp: 1283336094.6814, tolerance: 0.3000 [ WARN] [1283336095.198881223]: Costmap2DROS transform timeout. Current time: 1283336095.1988, global_pose stamp: 1283336094.8945, tolerance: 0.3000 . . . . 3) Then I use $rosrun rviz rviz to open rviz. in rviz two square appears one for the Grid (having lines as rows and columns) and the second square(whose left upper corner starts from the mid of the Grid square) is light gray having small visible Map inside it.And all TF appears on the corner of Grid.I set the pose using 2D Pose Estimate Button and transform frames (TF) appears at that point where I click in the Map: Also Map comes in the center of Rviz. Each time I set pose in rviz a message appears in move_base.launch file that: [INFO] [1283336203.162053078]: Setting Pose (1283336203.162035): 97.108 99.420 0.000 Well: For sending goal I use node simple_navigation_goals which I pick as it is from http://www.ros.org/wiki/navigation/Tutorials/SendingSimpleGoals When I run rhis node: It gives message of Sending goal and following message appears on move_base: [ Control loop missed its desired rate of 20.000Hz.... the loop actually took 0.5809 seconds ] So this the whole thing I run and use but I dont get Robot moving. I dont know why. Kindly advise, thanks a lot. safdar -- View this message in context: http://ros-users.122217.n3.nabble.com/sensor-origin-tp1388170p1399638.html Sent from the ROS-Users mailing list archive at Nabble.com.