Raw Message Definition
설명
- higher-level stamped data types 을 위한 표준 metadata
- 특정 coordinate frame에서, timestamped data를 소통하기 위해 사용됨.
정의
uint32 seq
- sequence ID: consecutively increasing ID
time stamp
- Two-integer timestamp that is expressed as:
- stamp.sec: seconds (stamp_secs) since epoch (in Python the variable is called 'secs')
- stamp.nsec: nanoseconds since stamp_secs (in Python the variable is called 'nsecs')
- time-handling sugar is provided by the client library
string frame_id
- Frame this data is associated with
Compact Message Definition
uint32 seq
time stamp
string frame_id