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Can a node publish different types on one topic?

asked 2017-01-05 04:45:10 -0500

Edu gravatar image

updated 2017-01-05 09:26:39 -0500

NEngelhard gravatar image

I am new to ROS and just started studying. I am stuck with using custom message types. I would like to know is it possible to publish two different data type to single topic? Or do we need to publish separately?

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Hi, you can publish even more than two data types but it depends on what you want to send.

Akhilesh gravatar imageAkhilesh ( 2017-01-05 08:32:22 -0500 )edit

their is no need to publish two types of msgs from single topic, just make another publisher its easy, any number of msgs u can publish, but from single topic i'm hearing first time.

dinesh gravatar imagedinesh ( 2017-01-05 10:07:52 -0500 )edit

if you advertise a topic like node.advertise<camerainfo>("camera_info", 1); , so in CameraInfo class, there is more than one data types are available like uint32, string etc.

Akhilesh gravatar imageAkhilesh ( 2017-01-05 23:56:24 -0500 )edit

HI, did you find a solution?

Kenn gravatar imageKenn ( 2017-07-17 03:19:18 -0500 )edit

Can you specify what exactly you want to publish? Or add some piece of code to understand the need.

Akhilesh gravatar imageAkhilesh ( 2017-07-18 09:16:41 -0500 )edit

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answered 2017-01-05 06:27:15 -0500

Procópio gravatar image

No, you have to publish it separately. Why would you want to publish in the same topic? If you explain what you are trying to accomplish, maybe we can propose a solution.

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Thank you !!! :)

Edu gravatar imageEdu ( 2017-01-05 07:09:13 -0500 )edit

Hi, I am trying to accomplish something similar, can you take a look at my question? Thanks.

Kenn gravatar imageKenn ( 2017-07-17 03:18:30 -0500 )edit

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Asked: 2017-01-05 04:45:10 -0500

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Last updated: Jan 05 '17