Hi,
In fact it was a problem of timestamp: I published my data without
setting the timestamp whereas the fixed frame was published with a
correct timestamp. It's now fixed.
Thanks for your suggestions.
Cheers,
Ugo
On 09/06/10 18:20, Ivan Dryanovski wrote:
> Ugo,
>
> Have you tried running this?
>
> rosrun tf view_frames
> evince frames.pdf
>
> Also, (and this might not be the source of the problem), but make sure
> that all your frames have only a single parent. That is if you publish
> transforms like
>
> fixed -> /srh/position/shadow_forearm
> srh/position/lfdistal -> /srh/position/shadow_forearm
>
> Both of these would work idividually, but publishing them together
> will cause a problem
>
> Ivan Dryanovski
>
>
> On Wed, Jun 9, 2010 at 12:51 PM, Ugo Cupcic<ugo@shadowrobot.com> wrote:
>
>> Hi,
>>
>> I'm having some problem displaying some /tf in rviz. I'm working on
>> displaying a hand in rviz.
>>
>> Here is the situation:
>> I have a robot_state_publisher transforming joint_datas to tf, and I can
>> view the model in rviz, using a frame published by the
>> robot_state_publisher (/srh/position/shadow_forearm). This works fine, I
>> see my whole hand, I can move the fingers, etc...
>>
>> I'm then publishing a fixed transform:<node pkg="tf"
>> type="static_transform_publisher" name="fixed_frame_pos_pub" args="0 0 0
>> 0 0 0 fixed /srh/position/shadow_forearm 20" /> which transforms the
>> /srh/position/shadow_forearm to /fixed. This fixed transform is published.
>> When I view this new /tf in rviz, the forearm goes to /fixed frame which
>> is fine, but I get errors for all the other joints saying "No transform
>> from [srh/position/lfdistal] to [/fixed]". The other joints are then not
>> displayed (no transform).
>>
>> However, the transform from shadow_forearm to fixed is published and the
>> transform from the rest of the joints to shadow_forearm are published as
>> well.
>>
>> Any ideas ?
>>
>> (I hope I was clear :S)
>>
>> Cheers,
>>
>> Ugo
>>
>> --
>> Ugo Cupcic | Shadow Robot Company | ugo@shadowrobot.com
>> Software Engineer 251 Liverpool Road
>> need a Hand? London N1 1LX | +44 20 7700 2487
>> http://www.shadowrobot.com/hand/ @shadowrobot
>>
>>
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>>
>>
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>
--
Ugo Cupcic | Shadow Robot Company | ugo@shadowrobot.com
Software Engineer 251 Liverpool Road
need a Hand? London N1 1LX | +44 20 7700 2487
http://www.shadowrobot.com/hand/ @shadowrobot
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