Exception thrown:"world" passed to lookupTransform argument target_frame does not exist. [closed]

asked 2014-06-28 19:53:50 -0500

jackcviers gravatar image

In Writing a tf broadcaster (Python)

 $ rosrun tf tf_echo /world /turtle1

the terminal outputs the following error:

Failure at 1404002761.660228438
Exception thrown:"world" passed to lookupTransform argument target_frame does not exist. 
The current list of frames is:

Does this indicate that a link is missing from "world" to the "base_link" of turtlesim? How might one go about fixing this apparent error?

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Closed for the following reason question is not relevant or outdated by jackcviers
close date 2014-08-23 13:54:38.118022

Comments

1

Can you tell us that the current list of frames actually is? You may be running into a problem due to the frames you want existing but with a `tf_prefix` specified, so you won't see them if you're just looking for `/world`, because they actually exist as `/tf_prefix/world`.

bjem85 gravatar imagebjem85 ( 2014-06-29 17:36:24 -0500 )edit

After rerunning the tutorial in a completely new workspace, it worked as described. Not sure what was going on, but something was apparently messed up.

jackcviers gravatar imagejackcviers ( 2014-07-17 19:28:21 -0500 )edit

I had the same error in the tf tutorial for writing a broadcaster (cpp). My mistake was to forget to assign the value for turtle_name after the check for the right number of arguments.

count_dueki gravatar imagecount_dueki ( 2017-05-15 14:13:46 -0500 )edit