%?Y:?Inputted?data;
%?Nstd:?ratio?of?the?standard?deviation?of?the?added?noise?and?that?of?Y;
%?NE:?Ensemble?member?being?used
%?TNM:?total?number?of?modes?（not?including?the?trend）
%
function?allmode=ceemd（YNstdNETNM）
%?find?data?length
xsize=length（Y）;
dd=1:1:xsize;
%?Nornaliz?data
Ystd=std（Y）;
Y=Y/Ystd;
%?Initialize?saved?data
TNM2=TNM+2;
for?kk=1:1:TNM2
????for?ii=1:1:xsize
????????allmode（iikk）=0.0;
????end
end

for?iii=1:1:NE
%?adding?noise
????for?i=1:xsize
????????temp=randn（11）*Nstd;
????????X1（i）=Y（i）+temp;
????????X2（i）=Y（i）-temp;
????end

????%?sifting?X1
????xorigin?=?X1;
????xend?=?xorigin;
%?save?the?initial?data?into?the?first?column
????for?jj=1:1:xsize
????????mode（jj1）?=?xorigin（jj）;
????end
????nmode?=?1;
????while?nmode?<=?TNM
?????????xstart?=?xend;
????????iter?=?1;
????????while?iter<=5
?????????????[spmax?spmin?flag]=extrema（xstart）;
?????????????upper=?spline（spmax（:1）spmax（:2）dd）;
?????????????lower=?spline（spmin（:1）spmin（:2）dd）;
?????????????mean_ul?=?（upper?+?lower）/2;
?????????????xstart?=?xstart?-?mean_ul;
?????????????iter?=?iter?+1;
????????end
????????xend?=?xend?-?xstart;
????????nmode=nmode+1;
????????%?save?a?mode
????????for?jj=1:1:xsize
????????????mode（jjnmode）?=?xstart（jj）;
????????end
????end
????%?save?the?trend
????for?jj=1:1:xsize
????????mode（jjnmode+1）=xend（jj）;
????end
????%?add?mode?to?the?sum?of?modes?from?earlier?ensemble?members
????allmode=allmode+mode;

???%%%=============================================================
???%?sifting?X2
???xorigin?=?X2;
???xend?=?xorigin;
???%?save?the?initial?data?into?the?first?column
???for?jj=1:1:xsize
????????mode（jj1）?=?xorigin（jj）;
???end
???nmode?=?1;
???while?nmode?<=?TNM
???????xstart?=?xend;
???????iter?=?1;
???????while?iter<=5
???????????[spmax?spmin?flag]=extrema（xstart）;
???????????upper=?spline（spmax（:1）spmax（:2）dd）;
???????????lower=?spline（spmin（:1）spmin（:2）dd）;
???????????mean_ul?=?（upper?+?lower）/2;
???????????xstart?=?xstart?-?mean_ul;
???????????iter?=?iter?+1;
???????end
???????xend?=?xend?-?xstart;
???????nmode=nmode+1;
???????%?save?a?mode
???????for?jj=1:1:xsize
???????????mode（jjnmode）?=?xstart（jj）;
???????end
???end
????%?save?the?trend
????for?jj=1:1:xsize
????????mode（jjnmode+1）=xend（jj）;
????end
????%?add?mode?to?the?sum?of?modes?from?earlier?ensemble?members
????allmode=allmode+mode;
????%fprintf（‘-‘）;
end
%?ensemble?average
allmode=allmode/NE/2;
%?Rescale?mode?to?origional?unit.
allmode=allmode*Ystd;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????492624??2018-05-21?16:17??ceemd分解\Ain.mat

?????文件?????578563??2018-05-22?20:27??ceemd分解\Bin.mat

?????文件???????2603??2014-04-01?21:11??ceemd分解\ceemd.m

?????文件???????2180??2011-10-21?09:02??ceemd分解\extrema.m

?????文件????????929??2018-10-15?10:26??ceemd分解\fenjie.m

?????目錄??????????0??2018-10-15?10:26??ceemd分解

-----------?---------??----------?-----??----

??????????????1076899????????????????????6