How to get rostopic hz average for first 5 values?

answered 2018-12-08 12:02:03 -0500

47576 ●179 ●367 ●662 http://namniart.com/

Yes; you can use the -w option to set the number of samples that rostopic hz will use when calculating the topic frequency. The full list of command-line options for rostopic hz is documented on the rostopic wiki

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When i run with rostopic hz -w 5, output does not stop. How to stop the output?

Striker ( 2018-12-10 20:15:57 -0500 )edit

You can stop the output with Ctrl-C (same as other commands and when running rostopic hz normally)

ahendrix ( 2018-12-10 23:04:49 -0500 )edit

I'm tying this in python or shell. Basically, i am looking for the 5 set of values to run and stop by itself.

Striker ( 2018-12-11 22:18:25 -0500 )edit

If you're working in Python I'd suggest subscribing to the topic yourself and then computing whatever metrics you want directly. Then you will have full control without trying to use multiple processes and command line arguments and string parsing.

tfoote ( 2018-12-11 22:27:23 -0500 )edit

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How to get rostopic hz average for first 5 values?