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rosbag : rewrite the values of a topic

asked 2018-04-16 12:49:12 -0500

lounis
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Dear all,

what can be the best way to rewrite the values of the messages in a topic in a bag file. For instance, how can I go about creating a new bag that contains modified values of a topic of another bag file (example : multiply the twists in topic of nav_msgs/Odometry messages and store the results in a new bag) ?

Thanks a lot for your help.

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answered 2018-04-17 03:34:41 -0500

mgruhler

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You can use the rosbag API. There is an example on the wiki

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Thanks for your answer. I have already seen that page. I have two problems with that : 1. I don't know python 2. Therefore I need a tool or a code snippet that replaces the values in a topic and saves the changes in a new bag

Thanks a lot.

lounis ( 2018-04-17 03:49:28 -0500 )edit

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Asked: 2018-04-16 12:49:12 -0500

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Last updated: Apr 17 '18

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