From: Patrick Mihelich <mihelich@willowgarage.com>
To: User discussions <ros-users@code.ros.org>
Sent: Wednesday, October 13, 2010 15:53:42
Subject: Re: [ros-users] rosbag play help
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@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
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