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Hi there,
I need ur help. I recorded a rosbag which contains LaserScan and tf for gmapping. How can i filter out some LaserScan and tf based on robot's travelled distance(or distance between two consecutive scanning point)?
Regards Hossain
You can write a script to iterate over the messages in the bag and do whatever filtering you want. See the rosbag Code API
The other option is to create a filtered bag file that only contains those topics that you are interested. See http://wiki.ros.org/rosbag/Tutorials/Producing%20filtered%20bag%20files
So basically, you have to list all topics and messages that you want to keep.
A quick example
rosbag filter <your bagfile> filtered_bag.bag 'topic == "/robot/topic1" and topic == "/robot/topic2"''
hi Art and Tfoote, thanks. I don't want to filter topics instead i want to filter data from same topic. e.g. i want to save laserScan only when robot moves 50 cm from previous scanning point. any thoughts?
Asked: 2013-10-28 17:13:47 -0500
Seen: 439 times
Last updated: Nov 10 '13
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