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rxbag timeline and plots incorrect

asked 2012-12-25 02:36:12 -0600

nunojpg gravatar image

updated 2012-12-29 18:13:04 -0600

130s gravatar image

I tried rxbag with the bag at: pr.willowgarage.com/data/gmapping/basic_localization_stage.bag.

The result is in screenshot: alunos.deec.uc.pt/~a2004110783/rxbag.png

The base_scan topic only shows messages up to 0:08, while there are more, just like tf. On the plot the translation.y is not getting plotted an instead it is a straight line at y=0.

This is in Fuerte with all the apt-get updates.

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answered 2012-12-29 15:50:23 -0600

Dirk Thomas gravatar image

Beside rxbag also the new replacement rqt_bag shows the same effect.

The bag file contains one message (at about 0:08) which timestamp is not in-order. You can fix the bag file by calling bagsort YOUR-BAG.bag YOUR-FIXED-BAG.bag.

Unfortunately that bagsort script is currently broken. I already committed a patch - if you don't want to wait for the new release you can just apply the simple fix from https://github.com/ros/ros_comm/issues/42 manually.

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Asked: 2012-12-25 02:36:12 -0600

Seen: 143 times

Last updated: Dec 29 '12