function?phi=bartlettse（yML）
%
%?The?Bartlett?method?of?spectra?estimation.
%
%?phi=bartlettse（yML）;
%
%??????y?->?the?data?vector
%??????M?->?the?length?of?subsequences?of?y
%??????L?->?the?number?of?psd?samples
%
%????phi?<-?spectral?estimates?at?L?frequencies?w=0?2*pi/L?...?2*pi（L-1）/L

%?Copyright?1996?by?R.?Moses


%?check?the?lenth?M
N=length（y）;
if?（M>N）
???error（‘M?is?greater?than?the?data?length.‘）;
???return
end

phi=welchse（yones（M1）ML）;???%?bartlett?is?a?special?case?of?welch.

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2004-03-10?17:49??ch2\
?????目錄???????????0??2005-08-29?17:15??ch3\
?????目錄???????????0??2005-09-06?12:08??ch4\
?????目錄???????????0??2004-03-10?17:49??ch5\
?????目錄???????????0??2005-08-29?09:09??ch6\
?????目錄???????????0??2005-08-29?11:21??data\
?????目錄???????????0??2005-08-30?13:20??extras\
?????文件????????2814??1997-04-18?13:45??data\lynxdata.mat
?????文件??????393303??1997-04-18?13:45??data\submarine.mat
?????文件???????20122??2005-08-29?11:20??data\sunspot.m
?????文件????????2664??2005-08-29?11:21??data\sunspotdata.mat
?????文件?????????669??1997-04-18?13:45??extras\argamse.m
?????文件?????????555??1997-04-18?13:45??extras\armase.m
?????文件?????????583??1997-04-18?13:45??extras\freqaphi.m
?????文件????????1019??2005-07-08?11:21??extras\freqplot.m
?????文件?????????600??2005-08-29?16:33??extras\lsa.m
?????文件?????????528??1997-04-18?13:45??ch2\bartlettse.m
?????文件?????????931??1997-05-12?16:36??ch2\btse.m
?????文件?????????482??1997-04-18?13:45??ch2\correlogramse.m
?????文件?????????684??1997-04-18?13:45??ch2\daniellse.m
?????文件?????????858??1997-04-18?13:45??ch2\periodogramse.m
?????文件????????1042??1997-04-18?13:45??ch2\welchse.m
?????文件?????????619??1997-04-18?13:45??ch3\argamse.m
?????文件????????1091??2005-09-06?11:02??ch3\armaorder.m
?????文件?????????954??1997-04-18?13:45??ch3\lsar.m
?????文件????????1040??1997-04-18?13:45??ch3\lsarma.m
?????文件????????1669??1997-04-18?13:45??ch3\mywarma.m
?????文件?????????854??1997-04-18?13:45??ch3\yulewalker.m
?????文件?????????761??2005-09-06?11:50??ch4\esprit.m
?????文件????????1058??1997-04-18?13:45??ch4\hoyw.m
?????文件????????1076??1997-04-18?13:45??ch4\minnorm.m
............此處省略11個文件信息