Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

How to publish topics at specific rate?(Python)

asked 2017-03-01 18:03:38 -0600

Joy16
112 ●40 ●45 ●56

I have 5 topics publishing images at different rates. I want them to publish at the same rate and hence I am trying to set the rostopic hz to a constant rate for all the 5 topics. How can I do it in rospy?

My understanding is that rospy.Rate() will work only for that loop of code. How can I set the rate a which the messages are being published?

Thanks

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2017-03-02 06:41:19 -0600

mgruhler

12390 ●32 ●193 ●173 https://github.com/mgruhler

updated 2017-03-02 06:41:32 -0600

This needs to be done/handled in the node actually sending the messages. Either they provide a possibility to set the rate, or not. Typcially, for most sensors (cameras, laser scanners, ...), they don't. You will get your messages as fast as possible.

If you want, you could, however, push all those topics through a topic_tools throttle. See the ROS wiki on the syntax.

edit flag offensive delete link

Comments

Thank you very much!

Joy16 ( 2017-03-02 09:39:43 -0600 )edit

add a comment

Question Tools

2 followers

Stats

Asked: 2017-03-01 18:03:38 -0600

Seen: 1,569 times

Last updated: Mar 02 '17

How to publish topics at specific rate?(Python) edit

1 Answer

Comments

Question Tools

Stats

Related questions

How to publish topics at specific rate?(Python)