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.

message_filters for Array of topic

asked 2018-07-09 05:16:21 -0600

pietrocolombo
63 ●5 ●8 ●11

updated 2018-07-09 06:41:59 -0600

Hi there!

I am wondering if anyone have ever tried to create a vectorised version of the example provided here message_filters (7.3 ApproximateTime Policy).

In short what I am trying to do is to synchronise a list of topics defined in a launch file.

In my current implementation I have a vector of topics (in my case of sensor_msgs::LaserScan type) and currently I have a subscriber function inside e FOR loop, but this seems to me not optimal and it also does not allow me to ensure a synchronisation between the messages coming from the topics.

Thanks! in advance

edit retag flag offensive close merge delete

Comments

Did anyone solve this issue?

techsid ( 2022-10-25 13:55:45 -0600 )edit

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2018-07-09 07:36:04 -0600

Ridhwanluthra
66 ●3 ●8 ●9

Take a look here. As you can see message filters can take up to 9 topics, so you can just put them all in together.

Also, if you need more you can take a look at chain (8th of the message filter page)

edit flag offensive delete link

Comments

tanks for the replay. But in my case the list of topics is define in a launch file, so I have to make a call-back for every number of topic. I'm looking for make only one call-back for every possibility with a vector as parameter.

pietrocolombo ( 2018-07-10 04:47:01 -0600 )edit

add a comment

Question Tools

3 followers

Stats

Asked: 2018-07-09 05:16:21 -0600

Seen: 360 times

Last updated: Jul 09 '18

message_filters for Array of topic edit

Comments

1 Answer

Comments

Question Tools

Stats

Related questions

message_filters for Array of topic