Lidar is not launching in the Gazebo simulation[BUG]

[thiagodeborba]

*Describe the bug I am trying to go through the tutorial. However, the Lidar is not launching with the simulation. I can neither see the points in RViz nor record a rosbag to generate the trajectory. How can I solve it?

[EfimiaPanagiotaki-StreetDrone]

The lidar driver is being launched automatically when clicking on the SD Twizy model button. The driver used is the integrated VLP-16 driver that can be found here. To only visualize the lidar points, on rviz go to Displays -> Global Options -> Fixed_Frame and change it to base_link or velodyne.

The default rviz file is pointing by default to map frame which on the step that you are at is not there.

[thiagodeborba]

Now I can see the vehicle in red, but no lines regarding the LIDAR reflections.

[EfimiaPanagiotaki-StreetDrone]

Please make sure you have completed the following steps when installing Project Aslan, as described here:

cd Aslan/
git submodule update --init --recursive
rosdep install -y --from-paths src --ignore-src --rosdistro $ROS_DISTRO

If this didn't fix your issue, make sure that the velodyne_gazebo_plugin is installed. To install it, do sudo apt-get install ros-melodic-velodyne-gazebo-plugins for melodic or sudo apt-get install ros-kinetic-velodyne-gazebo-plugins for kinetic.

[thiagodeborba]

I still can't see the LIDAR reflections and now there are 2 errors, 1 regarding Point Map and the other is regarding Points Raw.

[thiagodeborba]

I used both commands again, catkin init and catkin_make, now I can see the reflections. Thank you so much!

[EfimiaPanagiotaki-StreetDrone]

Awesome :) :+1: