How to read any ros message using string

Question

I am trying to write a subscriber class which subscribe to a topic and read messages published for that topic. As I know I need to pass a callback function with message structure to read received messages. But this approach is not generic. Is there any way so that I can read any ros message in form of string and send it to client classes which can parse them accordingly

Suppose your data is in float format, then in your callback function you can cast it into string (it's straight forward in Python at least). Then you do whatever you like with the string. I am still not sure what you require though. — akshayk07, Jul 09 '19 at 08:57

score 1 · Answer 1 · answered Jul 23 '19 at 10:39

1

You can use python like akshayk07 suggests, or you can use the C++ alternative: ros_type_introspection. The author wrote exactly what you ask for in generic_subscriber.cpp.

answered Jul 23 '19 at 10:39

aPonza

492
4
10

How to read any ros message using string

1 Answers1