Hi everyone,

When I want to run the move_base as the action server for the test code in:
http://www.ros.org/wiki/navigation/Tutorials/SendingSimpleGoals

The launch file of the move_base is:

> <launch>
>
>         <param name="global_costmap/robot_base_frame" value="/robot_base"/>
>         <param name="global_costmap/global_fram" value="/world"/>
>     <node name="move_base" pkg="move_base" type="move_base" respawn="true">
>     </node>
>
> </launch>
>

It keeps popping up the message in rxconsole:

Node: /move_base
Time: 1273663641.651775000
Severity: Warn
Location:
/home/ming/ros/stacks/navigation/costmap_2d/src/costmap_2d_ros.cpp:Costmap2DROS::Costmap2DROS:86
Published Topics: /rosout, /cmd_vel, /move_base/current_goal,
/move_base/goal

Waiting on transform from /robot_base to /map to become available before
running costmap, tf error: Frame id /map does not exist!


Which package defines /map should be the global_frame?
Does anybody have a clue how to fix the problem?

Thanks very much!

Best regards,
Ming

-- 
___________________________________
Ming Liu
Autonomous Systems Laboratory
ETH Zurich, CLA E 17.2
Tannenstrasse 3
8092, Zurich, Switzerland
Phone: +41 44 632 92 96
Mobile: +41 76 729 50 85
Fax:   +41 44 632 11 81
Liu.Ming.PRC@gmail.com
ming.liu@mavt.ethz.ch
___________________________________