Sliding window centered at a given point

Hi! I have a signal and I need to create a sliding window of known length (let's say x) but it needs to be centered at a given point (y). Can anyone help me? Thanks!

[Adam Danz]

Google "matlab sliding window".

Or check this list

https://www.mathworks.com/matlabcentral/answers/?term=sliding+window+centered

Answer 1

[Image Analyst]

What are you doing with signal values inside the sliding window? Taking the mean, std, or something custom? If it's some operation/function of your own invention, you can use nlfilter(). Otherwise maybe the family of mov***() might work, for example movmean(), etc. Or there's a variety of built-in functions, like sgolayfilt(), (which fits data in the window to a polynomial), etc.

[Laura petrescu]

I have to extract some time and frequency features, including std, mean, etc

[Image Analyst]

Try movmean(), movstd(), movvar(), movmedian(), stdfilt(), and nlfilt().

For frequency info, try fft(), spectrogram(), periodogram(), and pwelch().