[ros-users] rosbag play help

[Patrick Mihelich]

Instead of changing the bag file time stamps, you should use simulated time.
See http://www.ros.org/wiki/Clock.

Short version:
 - Before launching any nodes, set parameter /use_sim_time to True.
 - Use the --clock option of rosbag play.

Then rosbag will publish the simulated time on the /clock topic. All nodes
using ROS time will use the simulated time instead of wall-clock time.

Cheers,
Patrick

On Tue, Oct 12, 2010 at 11:41 PM, Peshala Jayasekara
<peshala_24 at yahoo.com>wrote:

> Hi all,
>
> I want to know if there is a way to change the time stamp of a bagfile when
> you play it.
> For example, when you run robot_pose_ekf of navigation stack, it compares
> current time with sensor time stamps and it will not update the filter for
> old sensor data.
>
> Thank you in advance.
> Peshala
>
>
>
>
> _______________________________________________
> ros-users mailing list
> ros-users at code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ros.org/pipermail/ros-users/attachments/20101012/63a3b894/attachment-0003.html>