Hi there, I started working on basic rosject but I am facing some problems as I am running it for the first time. I started roscore in one terminal but now when I use rostopic list, then I am getting only 2 topics, as shown in attached figure.
You have to remove the
~/catkin_ws/devel and compile again with
catkin build. Because as it says in the error you compiled previously with
catkin_make or at least the workspace was compiled that way.
PS: Since the workspace was previously build with
catkin_make, you may continue using
catkin_make. To switch between
catkin_make, you need to remove those directories first.
cd ~/catkin_ws rm -rf build/ devel/ catkin build source devel/setup.bash
As for the cmd_vel and so on, those are generated with the simulation. If you don’t have any simulation running, there won’t be any topic of that kind. So, launch the simulation and check for the topics again.
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