February 2020
Intermediate to advanced
432 pages
10h 50m
English
Content preview from Hands-On ROS for Robotics Programming
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Questions
- What is the difference between ROS topics and ROS messages?
A) Both stand for the data transmitted from one node to the other. B) A topic is how you identify a transmission channel and a message is one sample of the content that flows through that channel.C) Any topic name has to be unique, while several topics can transmit the same message.
- Which command would use to record a ROS session?
A) rosbag B) rosrecord C) roswrite
- Can a ROS node have a publisher and a subscriber at the same time?
A) Yes, if the topic subscriber is the same as the topic publisher. B) No, because it would imply a programming conflict: a node with a publisher loops at a constant rate, that is, rate.sleep(), while a node with a subscriber only runs an ...