Access specific message in rosbag file
I can get all the messages in my rosbag
file through this loop:
BOOST_FOREACH(rosbag::MessageInstance const m, view) {
//...
}
My rosbag
file is a record of images from the Kinect. And I'm trying to get the images from it.
Knowing the size of rosbag, how could I use rosbag::MessageInstance
and view
to get a specific message (or image) without going through all the messages.
EDIT:
I did a "mecanical" solution but I don't really like it:
I ask the user to choose a number which will correspond to his message (image) knowing the size of the rosbag file.
then I run BOOST_FOREACH
loop till I get to the message and extract it.
Asked by ROSkinect on 2016-06-21 09:08:43 UTC
Comments
I'd guess you can't, but maybe you can check the source code of rosbag play for how it treats the -s (start time) option. If you could jump to a certain timestamp, it probably would be done there.
Asked by Felix Endres on 2016-06-21 09:41:39 UTC
I'll check it out..
Asked by ROSkinect on 2016-06-22 04:51:51 UTC