hi, I have a time series data,I want to find first standard deviation array and second standard deviation array,using a standard deviation window,but I am getting errors.

3 次查看（过去 30 天）

显示更早的评论

Silpa K 2019-8-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/476895-hi-i-have-a-time-series-data-i-want-to-find-first-standard-deviation-array-and-second-standard-devi

评论： Silpa K 2019-8-25

采纳的回答： Jyothis Gireesh

Please help me

5 个评论
显示 3更早的评论隐藏 3更早的评论

Silpa K 2019-8-20

ok sir, I will check out your questions and tell you.Thank you.

Adam Danz 2019-8-20

Sure thing!

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Jyothis Gireesh 2019-8-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/476895-hi-i-have-a-time-series-data-i-want-to-find-first-standard-deviation-array-and-second-standard-devi#answer_388725

I am assuming that you want to calculate the moving standard deviation of a time series data.

Here are a few suggestions about this problem which may be able to help you.

The “std()” function in MATLAB calculates the standard deviation by taking the window length to be length of the time series data.
If you are interested in calculating the moving standard deviation you may use the “movstd()” which allows the window length to be specified as an extra argument. Note that you may also have to specify the ‘SamplePoints’ property as well when you are using a time series object as input to “movstd()”

You may also look at the following MATLAB Answers link which provides a possible workaround on how to calculate moving standard deviation for a time series.

https://www.mathworks.com/matlabcentral/answers/320963-calculating-moving-standard-deviation-bounds-for-time-series