I have a small robot (turtlebot3) with a Lidar. For aa demonstration I would like to process the data coming from the lira in the following way: 1) Pay attention only to a range of angles (e.g. -15 degrees to +15 degrees) 2) Filter it into a) distance to obstacle b) rate of change of a) c) rate of change of b) I am assuming that this is elementary and there are nodes/libraries in ROS that do just this. I am not asking for code but pointers to where to look and what to read. Thanks for your help! --- [Visit Topic](https://discourse.ros.org/t/converting-raw-lidar-data-to-something-more-useful/5533/1) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: