| ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange |
I need to collect messages from a topic, that is, subscribe to a topic, and then do something with some condition about the message is met (a flag on the message) with all the messages recibed previously. Since the callbacks are functions (and well-made functions should't have state), I don't see a straightforward way to do this. So, what can I do?
Thanks
You're gonna have to collect your messages somehow, e.g. in a class that has the callback.
ROS provides a cache that does this by time: http://wiki.ros.org/message_filters#C... A simple deque might also be sufficient.
Asked: 2014-06-03 10:05:37 -0500
Seen: 229 times
Last updated: Jun 03 '14
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.
