How do I filter my data points without using smoothdata?

Hey guys,

I'm trying to smooth the signal from a bunch of data points in time, but I'm not allowed to use any commands from the signal processing toolbox (namely smoothdata and filter). I have 10 data points for both time and signal (t = [0 1 2 3 4 5 6 7 8 9]) (y = [4 7 5 8 6 9 6 9 3 5]), I need to end up with the exact same number of data points in the end as in the beginning, just smoothed out. How do i go about this???

Thank you very much and kind regards,

Thomas Nell

[Adam Danz]

Perhaps these methods and examples will be helpful:

https://www.mathworks.com/help/matlab/data_analysis/data-smoothing-and-outlier-detection.html?s_tid=answers_rc2-1_p4_MLT

Answer 1

[TADA]

Some smoothing methods rely on fitting a moving curve to a small window of your data (Savitzky–Golay, LOESS, etc.)

The simplest method however relys on a moving average, you can do it iteratively, and for each value give a new value based on the average of a window around it