Chapter 3 codes: tf does not exist

[suvrat13]

When I'm trying to visualize the robot state and laser data on Rviz, I get an error in RViz that Fixed frame [map] does not exist. When i run rosrun rqt rqt i see tf being published. I dont know what to do.

[qboticslabs]

Can you post the issue with a screenshot ?

[suvrat13]

[suvrat13]

Here you can see that the arm does not load with RViz. I observed the same issue with the diff robot. Additionally I encountered the following error when launching seven_dof_arm_bringup_moveit.launch file

[libprotobuf ERROR google/protobuf/message_lite.cc:123] Can't parse message of type "gazebo.msgs.Packet" because it is missing required fields: stamp, type, serialized_data
Master Unknown message type[] From[37752]

I cant find a fix for these problems.

[qboticslabs]

Hi

Can you try to launch the following command for Rviz?

roslaunch seven_dof_arm_config demo.launch

[suvrat13]

Well the robot does load with launching with
roslaunch seven_dof_arm_config demo.launch. It is when launching through moveit with gazebo that I face this issue.

[qboticslabs]

It seems like a bug in Gazebo. May I know the version of ROS you are using and Ubuntu version?

Also, are you trying it on real PC or virtual box?

[suvrat13]

I am using ROS-indigo on Ubuntu Trusty 14.04 LTS. I have ubuntu installed in my PC. Its not running on virtual box.

[qboticslabs]

Did you check whether it is happening for other simulations? We have to find whether this bug is only for this demo.

[suvrat13]

I tried simulating the diff_drive_robot to observe the laser scan in RViz. I had the same problem there. I see that when I try to launch other projects ( different robotic arm) it works fine with demo.launch. Is this what you are asking?