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what is /rostopic_10245_1493704203398

asked 2017-05-02 01:09:50 -0500

DaDaLee gravatar image

updated 2017-05-02 02:02:58 -0500

gvdhoorn gravatar image

/rostopic_10245_1493704203398 appears when I run rosnode list. Is it by default? The list of number affixed are random or not?

And it has subscriptions of my node.The relevant info of it presents as follows:

Node [/rostopic_10245_1493704203398]
Publications: 
 * /rosout [rosgraph_msgs/Log]

Subscriptions: 
 * /odometry/filtered [nav_msgs/Odometry]

Services: 
 * /rostopic_10245_1493704203398/set_logger_level
 * /rostopic_10245_1493704203398/get_loggers


contacting node http://idriver-ThinkPad-E450:42951/ ...
Pid: 10245
Connections:
 * topic: /rosout
    * to: /rosout
    * direction: outbound
    * transport: TCPROS
 * topic: /odometry/filtered
    * to: /ekf_navigation_node (http://idriver-ThinkPad-E450:39280/)
    * direction: inbound
    * transport: TCPROS

Can someone enlighten it to me?I do appreciate your help.

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answered 2017-05-02 01:30:44 -0500

AlexisTM gravatar image

rostopic_10245_1493704203398 is an anonymous rostopic name. The anonymous means it apprend numbers to the node name so multiple nodes can live at the same time.

Also, rostopic is the tool used to read/write manually on topics. (rostopic echo, pub,...)

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Thank you for your reasonable proposal.So does it mean /rostopic*(prefixed number) appears whatever node I run and it carries the data being published?

DaDaLee gravatar image DaDaLee  ( 2017-05-02 02:25:38 -0500 )edit
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answered 2017-05-02 15:05:14 -0500

Wolf gravatar image

You seem to be running rostopic echo /odometry/filtered or rostopic hz /odometry/filtered in some other terminal. These calls set Up anonymous rostopic nodes, that you can See like above.

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Yeap.That's right,thank you so much

DaDaLee gravatar image DaDaLee  ( 2017-05-03 02:45:39 -0500 )edit

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Asked: 2017-05-02 01:09:50 -0500

Seen: 163 times

Last updated: May 02 '17