hi Rishi,

I just ran through that tutorial, downloading the linked bag, and it
works fine for me.  Did you set the use_sim_time parameter (step 4)
before starting gmapping (step 5)?

	brian.

On Tue, Jul 20, 2010 at 8:08 AM, Rishi Bedi <rbedi100@gmail.com> wrote:
> Hi,
> I'm trying to run the gmapping package, following the tutorial here:
> http://www.ros.org/wiki/slam_gmapping/Tutorials/MappingFromLoggedData
> .
> I'm getting errors at a few points along the way, however -- when I
> try to record my own bagfile from my Pioneer 2 (which I am
> teleoperating using a joystick), I repeatedly get this error:
> "[FATAL] [WallTime: 1279638142.894919030]: rosrecord::Record: could
> not write to file.  Check permissions and diskspace" My diskspace is
> definitely enough -- what permissions is it alluding to?
>
> I then tried just using the bagfile linked to in the tutorial, but
> gmapping outputs the following, repeatedly: "[ WARN] [WallTime:
> 1279638187.366396181]: TF_OLD_DATA ignoring data from the past for
> frame /base_link at time 126.2 according to authority
> /play_1279638095646529424". Using rosbag play to play the bagfile
> appears to be working, but it shows this:
> "RUNNING]  Bag Time:     35.500164   Duration: 0.900164 /
> 1239670987.745222   " <-- it's counting by 1/10, so that looks too
> big... it would take a while to count to that!
>
> Thanks,
> Rishi
>
> Rishi Bedi
> rbedi100@gmail.com
> _______________________________________________
> ros-users mailing list
> ros-users@code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>