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.

Removing part of a published topics path

asked 2018-09-19 21:45:09 -0500

TheMilkman
17 ●6 ●7 ●12

updated 2018-09-19 22:46:30 -0500

Say if im publishing diagnostic messages from a node using this;

nh.advertise<diagnostic_msgs::DiagnosticArray>("diagnostics", 10);

In the case its from our IMU node, making the topic its publishing called /imu/diagnostics. Is there a way to remove the /imu prefix so that the aggregator doesn't get confused? Or should I be running diagnostics from a separate node or something?

Thanks for any help.

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2018-09-19 22:44:23 -0500

TheMilkman
17 ●6 ●7 ●12

I found my own solution.

When defining a publisher, if you're trying to publish to the top level you must add a '/' to the front of the path. For example;

nh.advertise<diagnostic_msgs::DiagnosticArray>("/diagnostics", 10);

publishes to the topic;

/diagnostics

While

nh.advertise<diagnostic_msgs::DiagnosticArray>("diagnostics", 10);

publishes to the

node_name/diagnostics

edit flag offensive delete link

Comments

You're right, the wiki Names explains it with more details if you want.

Delb ( 2018-09-20 01:39:30 -0500 )edit

I guess I wasn't googling the right words, thanks for the link!

TheMilkman ( 2018-10-04 23:55:00 -0500 )edit

add a comment

Question Tools

1 follower

Stats

Asked: 2018-09-19 21:45:09 -0500

Seen: 382 times

Last updated: Sep 19 '18

Removing part of a published topics path edit

1 Answer

Comments

Question Tools

Stats

Related questions

Removing part of a published topics path