Not Seeing Robot in rviz

Question

I'm working through the URDF Tutorial and one of the first things to do is to load a example file, 01-myfirst.urdf, into rviz for visualization. So I load the example file as is, run the rviz launch file, rviz opens up, and the rviz grid is empty -- no robot!

I do get a warning message in rviz that says:

No tf data. Actual error: Fixed Frame [map] does not exist  

What does this mean? What's missing? Why can't I see the robot?

P.S. I'm running Hydro.

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Originally posted by daalt on ROS Answers with karma: 159 on 2014-01-04

Post score: 0

Answer 1

I would think this is a duplicate of no robot visible in rviz for urdf tutorial.

Have you used the search?

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Originally posted by gvdhoorn with karma: 86574 on 2014-01-04

This answer was ACCEPTED on the original site

Post score: 0

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Original comments

Comment by daalt on 2014-01-04:
Thanks. That was it! Yes, I used the search but I did not come across that post.