Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Revision history [back]

You could start learning by reviewing a sample code for the ROS2 Python Pointcloud Publisher. With exception of sensor_msgs_py and use of numpy, it is a basic example of working with a message type with an array inside. You should add your initial basic code in your question so we can help you better with your problems.

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.