Hello everyone!
I have installed Gazebo 8 with ROS Kinetic on Ubuntu 16.04 LTS. I have built a custom robot model in Gazebo and added a libhector_gazebo_ros_gps plugin. Also attached a base_footprint on the robot. But when i run `rostopic echo /fix` and `rostopic echo /fix_velocity`, none of them shows true data.
Do i need to build a map first? I tried to build a map through turtlebot tutorials, but i see no map on Rviz either.
I have been searching for a long time, but i can't find a solution to the problem. Any suggestions will be helpful!
Thank you, moshimojo
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