Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Revision history [back]

I would expect it to fail the first couple times through the loop until the transformListener has built up a buffer of data and then start working.

The transformListener subscribes to the /tf topic on construction and cannot provide lookups until it has received enough messages to build up it's tree.

This is at the bottom of this tutorial

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.