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ROSBag C++ API -- reading message Header

asked 2012-12-23 07:02:24 -0600

jrvanwhy
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updated 2014-01-28 17:14:39 -0600

ngrennan
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I am writing a C++ (*) program that reads in a bagfile, and needs to be able to access a message's header timestamp (not the one rosbag records itself), if it has one.

How can I do this using ROSBag's API?

I'm rewriting an existing Python script that's really slow.

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Thank you, Lorenz -- I was afraid that that was the answer. (I couldn't find the button to comment on an answer, so I'm doing it here).

jrvanwhy ( 2012-12-24 06:17:38 -0600 )edit

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answered 2012-12-23 21:43:00 -0600

Lorenz

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You can do that only if you know the type of the messages at compilation time. In that case, you can use the instantiate method of the class MessageInstance.

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Asked: 2012-12-23 07:02:24 -0600

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Last updated: Dec 23 '12

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ROSBag C++ API -- reading message Header