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 <jsharp83@gmail.com> 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
> ================================================
>
> _______________________________________________
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> 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