Hi, all I was trying this tutorial (http://www.ros.org/wiki/navigation/Tutorials/Using%20rviz%20with%20the%20Navigation%20Stack) with p2os and a pioneer AT-3 and when I get to specifying the initial pose in the map I can't get the particles to appear. I can see that rviz is publishing in the /initialpose topic, but amcl is not publishing in /particlecloud When i run roswtf I get that the topic /odom (between many others which don't seem significant to me) is unconnected. move_base is listening to /odom but none is publishing there. p2os should be publishing odometry messages right? or is it another node that should be publishing in this topic? Please tell me what am I missing. Thanks in advance Cristóbal -- View this message in context: http://ros-users.122217.n3.nabble.com/rviz-navigation-tutorial-tp2255852p2255852.html Sent from the ROS-Users mailing list archive at Nabble.com.