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creating rostopic

asked 2016-08-02 09:54:51 -0500

SaurabhR gravatar image

updated 2016-08-02 09:58:58 -0500

Hi, I am confused in how to create ROSTOPICs. In case of ROSMSG,one has to create a msg folder and then .msg file .Does one has to do the similar process for creating ROSTOPIC ?

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answered 2016-08-02 10:00:23 -0500

updated 2016-08-02 10:55:01 -0500

ahendrix gravatar image

A topic is "created" (and will show up when using ROS introspection tools such as rostopic) as soon as a publisher or subscriber to that topic is created within a ROS node. From the Python and C++ creating a publisher/subscriber tutorials:

C++:

ros::Publisher chatter_pub = n.advertise<std_msgs::String>("chatter", 1000);

Python:

pub = rospy.Publisher('chatter', String, queue_size=10)
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What is "chatter " here? Is it the name of topic?

SaurabhR gravatar image SaurabhR  ( 2016-08-02 10:04:06 -0500 )edit
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Yes. "chatter" is the name of the topic.

ahendrix gravatar image ahendrix  ( 2016-08-02 10:56:05 -0500 )edit

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Asked: 2016-08-02 09:54:19 -0500

Seen: 1,802 times

Last updated: Aug 02 '16