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.

What is 'slop' in ApproximateTimeSynchronizer?

asked 2020-11-03 17:11:19 -0600

paul_shuvo
45 ●9 ●11 ●19

updated 2020-11-03 23:52:30 -0600

jayess
6155 ●26 ●85 ●92

I'm going through the message filters in ros noetic and came across the following class.

class message_filters.ApproximateTimeSynchronizer(fs, queue_size, slop, allow_headerless=False, reset=False)

What does the parameter slop stand for?

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2020-11-03 17:43:38 -0600

JackB

977 ●10 ●76 ●33

From this documentation line 237:

"slop" parameter in the constructor that defines the delay (in seconds) with which messages can be synchronized

edit flag offensive delete link

Comments

I would point to the Python API documentation for ApproximateTimeSynchronizer instead.

gvdhoorn ( 2020-11-04 03:45:46 -0600 )edit

Very good point, thank you!

JackB ( 2020-11-04 09:47:18 -0600 )edit

Hello, however this param is missing in the C++ API. May I know why?

BCJ ( 2021-06-14 04:49:55 -0600 )edit

Please see #q375572 (among others, such as #q284758). The comments point to setMaxIntervalDuration(..).

And in the future: please don't post comments with follow-up questions under questions with accepted answers from N years ago. Your comment will have almost 0 visibility.

gvdhoorn ( 2021-06-14 04:52:33 -0600 )edit

add a comment

Question Tools

2 followers

Stats

Asked: 2020-11-03 17:11:19 -0600

Seen: 2,876 times

Last updated: Nov 03 '20

What is 'slop' in ApproximateTimeSynchronizer? edit

1 Answer

Comments

Question Tools

Stats

Related questions

What is 'slop' in ApproximateTimeSynchronizer?