Ask Your Question
0

Creating a throttle node

asked 2012-08-01 01:35:26 -0600

bgagnon gravatar image

Hello,

I was only able to find documentation online for command line tools for throttling or the other topic_tools for that matter.

Is there a way to create a throttle node from a launch file? I want to go from 30hz to something less. Thanks,

Blair

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
2

answered 2012-08-01 01:50:11 -0600

Lorenz gravatar image

Just use the command line tools in roslaunch:

<launch>
  <node name="foo_throttler" type="throttle" pkg="topic_tools" args="messages /input_topic 30 /input_topic_throttled" />
</launch>
edit flag offensive delete link more

Comments

Ha! So simple that I didn't even try that. Thanks!

bgagnon gravatar imagebgagnon ( 2012-08-01 02:35:23 -0600 )edit

This is the correct answer but I wish there were a way to inform a node that you don't need the data at the higher rate. Without this capability, a lot of processing is wasted on the publisher.

sedwards gravatar imagesedwards ( 2012-08-01 04:50:22 -0600 )edit

I have tried this but I can not get the rate I want. For example, my input_topic is 200Hz, but my input_topic_throttled is only 25Hz, even if I use 100 in the args.

ZiyangLI gravatar imageZiyangLI ( 2015-01-27 21:30:59 -0600 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

Stats

Asked: 2012-08-01 01:35:26 -0600

Seen: 2,621 times

Last updated: Aug 01 '12