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When I try to use bag file to store data, I find the bag file only store the data that I write last time. Last time means the last time to open the bag file and write data. Anybody knows how to add data to bag file?
I find the solution. Just change the bag open mode as bag = rosbag.Bag('test.bag', 'a') Mode 'a' means add in the file.
I'm happy you found the solution. However, your question was incomplete as I assumed you wanted to it from terminal instead of programatically :) How do will you deal with the difference in timestamps? Will the be a problem?
I don't think that is cheating. Most algorithms will not require the timestamp, other to check that a new message has arrived, or something like that.
Asked: 2015-07-01 13:23:11 -0500
Seen: 72 times
Last updated: Jul 02 '15
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I do not know if this is possible. However, you can always save bags with different name and the reproduce them in a sequence with a script.
Thank you for reply. Yes, I am doing exactly now as you say but I still want to see if adding data is possible. Anyway, thanks.