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Moving Skewness and moving kurtosis

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Katrina Anderson
Katrina Anderson 2018-10-26
评论： Leo Ge 2018-11-26
Hi, I am trying to figure out how to calculate the kurtosis and skewness during a 1 second time frame of data (500 points) moving through my entire data. I have figured out mean, median, std etc. But I am unsure how to calculate this.
I have 9 axis of data from an IMU, so i wish to calculate this moving skewness and kurtosis for each axis.
Thankyou for your help.

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回答（1 个）

Image Analyst
Image Analyst 2018-10-26
There are functions for skewness() and kurtosis() in the Statistics and Machine Learning Toolbox. So just program up a for loop where you move a window along and call those functions. Easy, right?
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Leo Ge
Leo Ge 2018-11-26
You may not know the huge difference of time consumption between "movavg()" and "loop+mean()".

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