roslibpy
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gramaziokohler
How can I publish the messages at a certain frequency ?
I have a subscriber node in ROS where a callback is implemented which makes it dependent on the frequency of the publisher. Now I want to publish messages to this subscriber node through rosbridge and i am using roslibpy for that.
Currently I am using the sleep function but i want to avoid using that.
What is basically the throttle_rate parameter. I tried to play with this but did not help. Is there some ros::rate() type of functionality with which i can send messages at a certain fixed frequency ?
Also, if no sleep is used, then what is the default rate of publishing ?
When I use rostopic hz on the ros side, then it shows me somewhere around 850ms
System Information
Windows 10, ROS melodic
+1 on the rate param appearing to have no effect. See https://answers.ros.org/question/313844/roslibpy-why-does-tfclient-seem-to-ignore-the-rate-parameter/. Also: we've found this to be a very useful library; thanks for putting it out there.
What is basically the throttle_rate parameter
throttle_rate is only used for subscriptions.
Beware, it is not actually a rate, but the interval in milliseconds!
Is there some ros::rate() type of functionality with which i can send messages at a certain fixed frequency ?
One option: Timer.
Beware, it is not actually a rate, but the interval in milliseconds!
Ah! Is this also true for the rate paramter to TFClient? (I guess I could just look in the code :)
Ah! Is this also true for the rate paramter to TFClient
No, I am talking about throttle_rate. Your problem is unrelated to this issue.
No, I am talking about throttle_rate. Your problem is unrelated to this issue.
Just looked in tf2_web_republisher and I can see it now; thanks.