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when i study the rviz:Markers: Sending Basic Shapes (C++), i come across some problem: when i run this order: rosrun using_markers basic_shapes, it told me that "Please create a subscriber to the marker",so how to solve this problem?

asked 2017-08-01 21:31:58 -0500

liangminglan55 gravatar image rosdistro: indigo; my ros workspace is catkin. tutorial:link text 3.and then when i run :rosrun rviz rviz, it come up with nothing in my rviz, like this picture:no fixed frame, no shape on the plane.

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answered 2017-08-02 07:36:19 -0500

naveedhd gravatar image

This problem is solved by doing exactly what it told you: "Please create a subscriber to the marker"

When you do rosrun using_markers basic_shapes, this node publishes to topic /visualization_markers. You can verify that markers are being published by running rostopic echo /visualisation_markers in another terminal.

To visualise the marker in rviz, you have to do few additional things in rviz:

  1. Add display of Marker (this subscribes to the marker topic)
  2. Change the Fixed frame to my_frame (this is specified in line 47 of basic_shapes node)

gif illustrating above points

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Asked: 2017-08-01 21:31:58 -0500

Seen: 439 times

Last updated: Aug 02 '17