rqtgraph

rqtgraph is a graphical tool for visualizing data in the Robot Operating System (ROS). It is part of the rqt suite, a collection of Qt-based tools for ROS. rqtgraph provides a dynamic graph visualization of the ROS topics and nodes, allowing users to monitor the flow of data between different parts of a ROS system. The tool displays nodes as circles and topics as arrows connecting these nodes, making it easy to understand the communication structure of a ROS application. rqtgraph also supports interactive features, such as clicking on nodes or topics to get more information, and filtering options to focus on specific parts of the graph. This tool is particularly useful for debugging and understanding the behavior of complex ROS systems. It is designed to be lightweight and easy to use, making it an essential tool for ROS developers and researchers.