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frames not shown using view_frame node but in RViz

asked 2017-04-15 19:50:28 -0500

anirban gravatar image

updated 2017-04-15 19:50:48 -0500

Hi,

I am simulating mobile robot in Gazebo and visulizing in RViz. I have attached camera and laser links and corresponding Gazebo plugins and can successfully see them in RViz and Gazebo. I can see all the frames in TF tree in RVIz including laser link and camera link. However whenever I use rosrun tf view_frames to see the transform tree I noticed that laser and camera links are missing from there. The URDF clearly describes the parent and child links for laser and camera joints. Further to inform that robot_sate_publisher and joint_sate_publisher nodes are also running. Then my question is why can not I see laser joint and camera joint in frames.pdf generated using rosrun tf view_frames but in RViz those joint transform are shown OK with correct transforms?

Thank you in advance.

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answered 2017-04-15 20:11:48 -0500

tfoote gravatar image

Can you try rosrun tf2_tools view_frames.pyhttp://wiki.ros.org/tf2_tools instead?

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Thank you. Now I can see all the links with their associated parent and child links. However I was wondering why Average rate : 10000.0, Buffer length: 0.0, Most resent transform: 0.0, Oldest transform: 0.0 for camera and laser joints but non zero entries for the same for four wheel joints?

anirban gravatar imageanirban ( 2017-04-15 20:50:46 -0500 )edit
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Those are static transforms. They don't have a buffer length and are infinitely resolvable. The 10000.0 is just filled in to show a very high number. It can be considered infinity.

tfoote gravatar imagetfoote ( 2017-04-16 02:02:13 -0500 )edit

Thank you for the reply.Your answer was really helpful.

anirban gravatar imageanirban ( 2017-04-16 19:09:22 -0500 )edit

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Asked: 2017-04-15 19:50:28 -0500

Seen: 381 times

Last updated: Apr 15 '17