problems running nav2d tutorials - ROS Hydro

edit

Hi,

I have recently installed the nav2d package for ROS - Hydro on ubuntu 12.04 64 bit.

I installed the packages using the sudo apt-get install ros-hydro-nav2d.

when running the launch file :

$ roslaunch nav2d_tutorial tutorial1.launch

I am getting the following errors:

core service [/rosout] found
process[Stage-1]: started with pid [15084]
ERROR: cannot launch node of type [nav2d_operator/operator]: can't locate node [operator] in package [nav2d_operator]
process[Joystick-3]: started with pid [15108]
ERROR: cannot launch node of type [nav2d_remote/remote_joy]: can't locate node [remote_joy] in package [nav2d_remote]

The stage simulator comes up nicely but on the rviz I can only see the robot and laser scans and no cost maps. When using joystick the robot does not move. Can someone help me with this issue?

Thanks a lot.

Alex

Edit 2:

From @sebastian's suggestion, I checked the rqt_graph and rosnode info, it seems that my hokuyo was giving scan topic while the topic needed in base_scan. So I removed the lines <remap from="scan" to="base_scan"/> from the launch file. But no success. check the screenshot But when i change the topic of map from map to costmap topic I was able to get the costmapScreenshot. I checked my tf frames. And the laser is connected to the base_laser link so I made few changes to the ros.yaml file.

   ###########################################################
# Defines topics services and frames for all modules

### TF frames #############################################
laser_frame: base_laser
robot_frame: base_link
odometry_frame: odom
offset_frame: offset
map_frame: map

### ROS topics ############################################
map_topic: map
laser_topic: scan

### ROS services ##########################################
map_service: static_map

updated rqt graph I changed the laser_frame to base_laser from base_laser_link and for the time things worked. I was able to see the map. But could not control the robot using my usb joystick. I used the normal joytick. launch to move the robot and the map gets updated for few seconds and the robot does not move. Little_success.

So things seem to get working but I am doing something wrong with the joy node or with the tf frame. Since my cmd_vel topic is mapped to /RosAria/cmd_vel. Should I be changing that and where exactly.

Can you please check the tf frames and the rqt graphs I attached and find the problem.