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I want to write a node that would parse a ros topic given as the input argument and display the message published by it. Can you please give me leads to point to existing examples that I could look into?
If I understand your question, you want to read a rosbag and display the messages from a particular topic? If that's the case; the Rosbag Cookbook contains a C++ example on how to do so.
The C++ API is also helpful and contains another example on how to read from a rosbag in C++.
You are somehow trying to reimplement rostopic echo, so a good starting point would be the original implementation
Asked: 2016-12-10 16:32:57 -0600
Seen: 1,199 times
Last updated: Dec 11 '16
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I'm not sure I understand you completely, but perhaps the topic_tools::ShapeShifter can be of help.