function[y]=smoothing（x?win_num?poly_order）
%This?is?a?program?for?smoothing?the?analytical?signals.x?can?be?a?matrix
%with?every?column?being?an?analytical?signal?vector.
%The?parameter?win_num?is?the?window?size?which?can?be?chosen?to?have?a
%value?of?7?to?17say?7?9?11?13?15?17;?The?parameter?poly_order?is?the
%polynomiar?order?which?can?be?chosen?to?have?a?value?of?2?or?3?and?4?or5.
[m1n1]=size（x）;
y=zeros（size（x））;
if?win_num==7
????if?poly_order==2?|?poly_order==3
????????coef1=[-2?3?6?7?6?3?-2]/21;
????????for?j=1:n1
????????????for?i=4:m1-3
????????????????y（ij）=coef1（1）*x（i-3j）+coef1（2）*x（i-2j）+coef1（3）*x（i-1j）+coef1（4）*x（ij）+coef1（5）*x（i+1j）+coef1（6）*x（i+2j）+coef1（7）*x（i+3j）;
????????????end
????????end
????else
???????coef1=[5?-30?75?131?75?-30?5]/23

?屬性????????????大小?????日期????時間???名稱
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?????文件????????5605??2016-01-11?16:14??Savitzky-Golay-matlab.m