Hi Tully,
> Could you check some of the debugging outputs from tf. There are debugging
> methods here: http://www.ros.org/wiki/tf/Debugging%20tools Of particular
> interest is the output of view_frames.
I did check the output of view_frames and there is only ONE tree, also
the TF-display of rviz display the tree correctly.
> Also, are you running in simulation? If so do you have /using_sim_time set
> to true? This can cause a race condition at startup and cause the "no
> common time" error. See documentation here http://www.ros.org/wiki/Clock
No, I am not running in simulation but on the real robot (a P3AT).
The most strange thing is - in my opinion - that I can get the correct
transformation with tf_echo while my code is throwing this error.
Regards,
Sabrina