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rviz 'measure' tool

asked 2014-12-07 20:41:03 -0600

charkoteow gravatar image

updated 2014-12-07 20:43:40 -0600

On rviz, there's a measure tool at the menu on top. How do I use it? It doesn't seem to be displaying any sort of 'measurement' like distance or coordinates.

Edit: On ROS Hydro.

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answered 2014-12-08 11:18:31 -0600

Rabe gravatar image

updated 2014-12-08 11:25:15 -0600

When you activate it, you can click one time to set the starting point. From then on a white line will follow your cursor, until you click for the end point. The measured distance will me shown at the bottom of the Rviz window.

Edit: I guess I forgot to mention the trick: You can't measure between to random points in the empty space. You have to have some kind of object (TF, Pointcloud, robot, marker...) present, and the can only click on those elements.

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im guessing that grid maps are random points in empty space?

charkoteow gravatar image charkoteow  ( 2014-12-10 06:07:29 -0600 )edit

I'm not too sure, I expected everything that's not the background grid to work. What might help you though is the "Publish Point" function of Rviz, it publishes points to the clicked_point topic. I haven't used it exentsively, but maybe you can check it out.

Rabe gravatar image Rabe  ( 2014-12-16 00:55:16 -0600 )edit

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Asked: 2014-12-07 20:41:03 -0600

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Last updated: Dec 08 '14