Hi Sabrina,
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.
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
Tully
Hi everybody,
I get a strange error when I try to do a transformPose:
[ERROR] ... Could not find a common time /base_link and /map
and
[ERROR] ... Could not find a connection between /base_link and /map
because they are not part of the same tree.
But when I start tf_echo /base_link /map there is a proper transformation.
The error occurred suddenly when I started a launch-file which did
work without any problem at the last startup.
'rosrun tf reset_time.py' solves the problem for a short time, but
after some successful calls of "transformPose" the error is back again.
Any ideas?
Greetings from the RoboCup German Open in Magdeburg,
Sabrina
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