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I there a way in C++ to query if a topic exists and if so what message type it uses?
I am trying to write a generic visualization tool and would like to subscribe to a topic using a callback matching the topic's type.
Alternatively a method that accepts all messages but allows me to learn their type in the callback would also work.
The xmlrpc api should be able to do that. (getPublishedTopics)
Take a look at shape_shifter in the topic_tools package. http://www.ros.org/doc/api/topic_tools/html/shape__shifter_8h_source.html
You can subscribe to any topic and when a message has been received consult the message type.
Asked: 2012-03-13 19:03:59 -0600
Seen: 2,071 times
Last updated: Mar 13 '12
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