openni_launch pointclouds not published in rviz

Question

Hi, openni_launch when ran gives the following error

[ERROR] [1324070131.410127857]: Tried to advertise a service that is already advertised in this node [/camera/depth_registered/image_rect_raw/compressed/set_parameters]
[ERROR] [1324070131.419698718]: Tried to advertise a service that is already advertised in this node [/camera/depth_registered/image_rect_raw/theora/set_parameters]

As given in the http://answers.ros.org/question/3210/complaint-from-openni_launch-on-already-advertised assuming that it doesn't make an impact i checked the rviz. I can see the image but the pointcloud is not being visualized. Even the status is "ok" for the pointcloud2 display in rviz. I echoed the topic that is subscribed by the rviz on the command line and could see the point clouds being displayed. Can someone tell what i am missing here. I saw in some posts that a dynamic reconfigure has to be done for this node. In that case how do i do it.

Thanks, Karthik

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Originally posted by karthik on ROS Answers with karma: 2831 on 2011-12-16

Post score: 0

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Original comments

Comment by karthik on 2011-12-20:
Any help on this :(

Answer 1

You probably still have an earlier instance running, which roscore knows about.

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Originally posted by joq with karma: 25443 on 2011-12-16

This answer was ACCEPTED on the original site

Post score: 0

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Original comments

Comment by karthik on 2011-12-25:
any comments on the issue??

Comment by karthik on 2011-12-17:
When i am not running the roslaunch openni_launch openni.launch the rosservice list is showing "ERROR: Unable to communicate with master!" So i don c anyother instance running. I feel that the openni.launch is advertising the same thing twice but dont kno which code to check for the same.

Comment by joq on 2011-12-17:
Try rosservice list, I suppose. Only one node can advertise a given service. That is what the launch is complaining about.

Comment by karthik on 2011-12-16:
Can you tell how to check that? I don have any other instance as such. But even in that case if rostopic is able to echo that, why is it not subscribed by rviz.

Comment by joq on 2013-09-17:
If the roscore is being started by roslaunch, it will terminate when the launch does. You can avoid that by running it separately, before roslaunch.