Should you use ros::Subscribe or message_filters::Subscribe ?

noetic

asked 2022-05-03 03:56:45 -0600

tomkimsour
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As I was browsing different github repositories I came accross these two type of way to write a node in ros. Why do people use these two and which one is preferable ?

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answered 2022-05-05 09:56:49 -0600

Alex-SSoM

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ros::Subscribe is the standard way to subscribe to a topic.

message_filters::Subscribe can be used when you need to sync two or more topics. For example an RGB and a Depth image from a Kinect like camera. You can use ApproxSync or ExactSync depending on your specific application.

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answered 2022-05-04 03:08:40 -0600

Petros ADLATUS
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Hello,

did you read the entries to the specific documentation for both (http://wiki.ros.org/message_filters and http://wiki.ros.org/ROS/Tutorials/Wri...). I mean for my understanding you can use both and it's fine.

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Should you use ros::Subscribe or message_filters::Subscribe ?

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