I appreciate your response. I saw the scan node in wiki page but there is no scan node in my source. I also checked with this command "rosnode info /amcl" but there is only subscription for tf node. Attached file is screen-shot of that. Thank you. 2010/12/22 Tully Foote > Hi Eunchul, > > I expect you'll see /scan dangling if you check the All Topics box. > > For a better view of what a node is doing I suggest "rosnode info /amcl" > Also ROS APIs are documented on the wiki like this > http://www.ros.org/wiki/amcl#Nodes > > Tully > > On Tue, Dec 21, 2010 at 6:19 PM, eunchul Jeon wrote: > >> Hi, I'm Eunchul Jeon In South Korea. >> >> I want to use amcl package but, there is no subscription for laser scan >> Attached file is a rxgraph capture image. >> >> I received source file in following svn repository and compiled >> successfully. >> svn https://code.ros.org/svn/ros-pkg/stacks/navigation/trunk/amcl >> >> I appreciate in advance your help. >> >> -- >> ================================================ >> Eunchul Jeon >> >> M.S. Student, Intelligent Systems and Neurobotics lab, >> Dept. Computer Science, KAIST >> Science town, Daejeon, 305-701, South Korea >> TEL: 82 42 350 3580 >> E-mail: jsharp@kaist.ac.kr, jsharp83@gmail.com >> Homepage: http://isnl.kaist.ac.kr >> ================================================ >> >> _______________________________________________ >> ros-users mailing list >> ros-users@code.ros.org >> https://code.ros.org/mailman/listinfo/ros-users >> >> > > > -- > Tully Foote > Systems Engineer > Willow Garage, Inc. > tfoote@willowgarage.com > (650) 475-2827 > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > > -- ================================================ Eunchul Jeon M.S. Student, Intelligent Systems and Neurobotics lab, Dept. Computer Science, KAIST Science town, Daejeon, 305-701, South Korea TEL: 82 42 350 3580 E-mail: jsharp@kaist.ac.kr, jsharp83@gmail.com Homepage: http://isnl.kaist.ac.kr ================================================