[ros-users] use_sim_time

[Josh Faust]

Are you playing with rosbag play --clock?

On Wed, May 5, 2010 at 1:09 PM, Ivan Dryanovski
<ivan.dryanovski at gmail.com>wrote:

> Hi all,
>
> I'm trying to play back sensor data using rosbag. I a launch file that
> starts several have several nodes which subscribe to the data and use
> it. Among the nodes launched by the launch file is a static transform
> publisher. I have tried two different things, which both fail:
>
> 1. Executing this sequence:
>  - set use_sim_time to true
>  - launch the .launch file
>  - play the data using rosbag
>
> Results in:
>
> [ WARN] [1273089559.789342235]: You requested a transform that is
> 1117.125 seconds in the past,
> but the tf buffer only has a history of 9.901 seconds.
>  When trying to transform between /laser and /odom.
>
> 2. Executing this sequence:
>  - set use_sim_time to false
>  - launch the .launch file
>  - play the data using rosbag
>
> Results in: the static transform publisher doesn't publish anything
> (or at least, I don't see a tf in either rviz or "rostopic echo tf").
> Moreover, all the nodes that I wrote do not enter their spin() loop
> that normally starts when I start the package.
>
> Any help would be welcome.
>
> Thanks,
>
> Ivan Dryanovski
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