ROS Q&A | How to know if new message is different from previous message in a subscribed rostopic?

Written by Ruben Alves

02/10/2017

 

Hi all,

when working with ROS, on almost 99% of the cases we use ROS Topics. There are some scenarios where we only can “do something” when a message published on a topic is different from a previous message.

In this video we show how to solve this by answering a real question.

The real question that we answer can be found on the following link:

https://answers.ros.org/question/270696/how-to-know-if-new-message-is-different-from-previous-message-in-a-subscribed-rostopic/

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