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2016-08-09 20:55:01 -0500	received badge	● Famous Question (source)
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2016-01-12 20:11:06 -0500	received badge	● Autobiographer
2016-01-12 20:08:55 -0500	commented answer	What does "timestamp" of "header" in hokuyo's scan data? Thank you~ I'll have to look at the code. Thanks~
2016-01-12 08:21:11 -0500	commented answer	What does "timestamp" of "header" in hokuyo's scan data? Thank you~ The timestamp of encoder data from rosaria is also based on host PC. In rosaria code, the timestamp of encoder is updated by ros::Time.now () just before publishing. Am I right?
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2016-01-12 07:55:35 -0500	commented answer	What does "timestamp" of "header" in hokuyo's scan data? Thank you ~~ May I ask one more? As far, the timestamp is the first ray measurement in a scan. Is the timestamp based on host PC timer by time calibration? There are two timer, in hokuyo and in host PC.
2016-01-12 06:47:30 -0500	asked a question	What does "timestamp" of "header" in hokuyo's scan data? I'm wondering what timestamp in hokuyo's sensor_msgs::LaserScan does mean. Is the time at first scan ray is measured? Or is the time at last scan ray is measured? I know there is calibration function of latency between hokuyo and host PC in hokuyo node. But I cannot understand how the function works. Could you explain to me? Thanks in advance.