[ros-users] Navigation stack not working
Tully Foote
tfoote at willowgarage.com
Tue Sep 21 17:44:32 UTC 2010
Prasad,
On 09/21/2010 10:28 AM, Eitan Marder-Eppstein wrote:
>
> 4. My tf_monitor gives me the output as below
> Node: /amcl 10.0502 Hz, Average Delay: -0.0153442 Max Delay:
> 0.145252 <==
> which is in negative
> Node: /eskorta_odom 22.022 Hz, Average Delay: 0.000921226 Max Delay:
> 0.0214084
> Node: /eskorta_state 30.0514 Hz, Average Delay: 0.0180185 Max Delay:
> 0.0565425
> Is it fine to have negative delay? - i am not able to figure it
> out since
> this is my pre-hardware testing.
>
>
> I'm not sure why the average delay would be negative. I'll let someone
> who knows more chime in on this.
I have added to the tf FAQ the answer to this question at
http://www.ros.org/wiki/tf/FAQ#Why_do_I_see_negative_average_delay_in_tf_monitor.3F
Tully
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