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How do I parse rostopics from a ros bag in C++?

asked 2016-12-10 16:32:57 -0600

Joy16 gravatar image

updated 2016-12-10 17:49:45 -0600

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?

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I'm not sure I understand you completely, but perhaps the topic_tools::ShapeShifter can be of help.

gvdhoorn gravatar imagegvdhoorn ( 2016-12-11 03:21:02 -0600 )edit

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answered 2016-12-11 04:04:11 -0600

rbbg gravatar image

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++.

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answered 2016-12-11 04:29:57 -0600

NEngelhard gravatar image

You are somehow trying to reimplement rostopic echo, so a good starting point would be the original implementation

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Asked: 2016-12-10 16:32:57 -0600

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Last updated: Dec 11 '16