gaowenliang/imu_utils

What is the meaning of max_cluster

YanhaoZhang opened this issue ยท 8 comments

YanhaoZhang commented

Hi Wenliang Gao
May I ask you the meaning and how to set up the parameter of max_cluster? Thank you very much.

liyuebit commented

Hi bro,
Have you figured out the meaning of these parameters, max_time_min max_cluster ?

YanhaoZhang commented
johnjin404 commented

@YanhaoZhang @gaowenliang
do you figure out the param max_cluster meaning?,,,i think it refers to the delt-t meaning the noise sampling time, but i don't know the unit of the max_clustering..
And more confusing thing is that when i change the bag playing rate e.g. -r 50 or change the max_cluster to 50,, the result of gyro_n&gyro_w&acc_n&acc_w diverse a lot . I don't know which one is well estimated and how to set correct param...

YanhaoZhang commented

@johnjin404
Hi, I haven't figure out the meaning of max_cluster meaning. I did not change the playing rate so I did not noticed this problem. What I did is I just used the default value. Please let me know if you find the meaning of it. Many thanks

Deleted user commented

@YanhaoZhang @johnjin404
hi, please refer to the Figure 1 in this pdf.
"Divide the time history of the signal which is the sequence of Gyro output data over time, into clusters of finite time duration of ๐‰=๐‰๐ŸŽ. "
Allan Variance: Noise Analysis for Gyroscopes

DEQDON commented

@ZHAORANWU1 Thanks! Your explanation is reasonable.

YanhaoZhang commented

@ZHAORANWU1 Many thanks :)

gaowenliang commented

max_cluster is the number of clusters.
The more the better.