On 09/01/2010 05:49 PM, Tim Field wrote:
> Sure. It may be easier to just use rosbag play on a bag in which the
> message timestamps have been rewritten to their header timestamp (if
> available), i.e.
>
> import roslib; roslib.load_manifest('rosbag')
> import sys, rosbag
> outbag = rosbag.Bag(sys.argv[2], 'w')
> try:
> for topic, msg, t in rosbag.Bag(sys.argv[1]).read_messages():
> outbag.write(topic, msg, msg.header.stamp if
> msg._has_header else t)
> finally:
> outbag.close()
>
Great, thanks Tim! That's exactly the postprocessing that I was looking
for (and I wasn't even aware of that nice Python rosbag API)!
I just had to filter out "rosout" because a few messages from way in the
past delayed the real messages for too long, but otherwise all looks
fine at a first glance.
Is that worth adding as a full script to rosbag, or at least to mention
it in the wiki somewhere? I will definitely use that more often to get
better screencaptures in RViz from bagfiles.
Cheers,
Armin
--
Armin Hornung Albert-Ludwigs-Universität
www.informatik.uni-freiburg.de/~hornunga Dept. of Computer Science
HornungA@informatik.uni-freiburg.de Humanoid Robots Lab
Tel.: +49 (0)761-203-8010 Georges-Köhler-Allee 79
Fax : +49 (0)761-203-8007 D-79110 Freiburg, Germany
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