function?fc=sgsdf（xndnx0flag）
%Function:
%???????Savitzky-Golay?Smoothing?and?Differentiation?Filter
%???????The?Savitzky-Golay?smoothing/differentiation?filter?（i.e.?the?polynomial?smoothing/differentiation?filter?
%???????or??the?least-squares?smoothing/differentiation?filters）?optimally?fit?a?set?of?data?points?to?polynomials
%???????of?different?degrees.?
%???????See?for?details?in?Matlab?Documents?（help?sgolay）.??The?sgolay?function?in?Matlab?can?deal?with?only?
%???????symmetrical?and?uniformly?spaced?data?of?even?number.
%???????This?function?presented?here?is?a?general?implement?of?the?sgolay?function?in?Matlab.?The?Savitzky-Golay?filter
%???????coefficients?for?even?number?nonsymmetrical?and?nonuniformly?spaced?data?can?be?obtained.?And?the?filter?coefficients
%???????for?the?initial?point?or?the?end?point?can?be?obtained?too.In?addition?either?numerical?results?or?symbolical?
%???????results?can?be?obtained.
%Usage:
%???????fc???=?sgsdf（xndnx0flag）
%???????x????=?the?original?data?point?e.g.?-5:5?
%???????n????=?polynomial?order????????????????????default=1
%???????dn???=?differentation?order?（0=smoothing）??default=0
%???????x0???=?estimation?point????????????????????default=0
%???????flag?=?numerical（0）?or?symbolical（1）???????default=0
%???????fc???=?filter?coefficients?obtained.
%Notes:
%1.?????x??can?be?arbitrary?e.g.?odd?number?or?even?numbersymmetrical?or?nonsymmetrical?uniformly?spaced?
%??????????or?nonuniformly?spaced?etc.???????
%2.?????x0?can?be?arbitrary?e.g.?the?initial?pointthe?end?pointetc.
%3.?????Either?numerical?results?or?symbolical?results?can?be?obtained.
%Example:
%???????sgsdf（[-3:3]2000）
%???????sgsdf（[-3:3]2001）
%???????sgsdf（[-3:3]20-31）
%???????sgsdf（[-3:3]2121）
%???????sgsdf（[-2:3]211/21）
%???????sgsdf（[-5:2:5]2101）?????
%???????sgsdf（[-1:1?2:2:8]2001）
%Author:
%???????Jianwen?Luo??2003-10-05
%???????Department?of?Biomedical?Engineering?Department?of?Electrical?Engineering
%???????Tsinghua?University?Beijing?100084?P.?R.?China??
%Reference
%[1]A.?Savitzky?and?M.?J.?E.?Golay?“Smoothing?and?Differentiation?of?Data?by?Simplified?Least?Squares?Procedures“?
%???Analytical?Chemistry?vol.?36?pp.?1627-1639?1964.
%[2]J.?Steinier?Y.?Termonia?and?J.?Deltour?“Comments?on?Smoothing?and?Differentiation?of?Data?by?Simplified?Least?Square?Procedures“
%???Analytical?Chemistry?vol.?44?pp.?1906-1909?1972.
%[3]H.?H.?Madden?“Comments?on?Savitzky-Golay?Convolution?Method?for?Least-Squares?Fit?Smoothing?and?Differentiation?of?Digital?Data“?
%???Analytical?Chemistry?vol.?50?pp.?1383-1386?1978.
%[4]R.?A.?Leach?C.?A.?Carter?and?J.?M.?Harris?“Least-Squares?Polynomial?Filters?for?Initial?Point?and?Slope?Estimation“?
%???Analytical?Chemistry?vol.?56?pp.?2304-2307?1984.
%[5]P.?A.?Baedecker?“Comments?on?Least-Square?Polynomial?Filters?for?Initial?Point?and?Slope?Estimatio

?屬性????????????大小?????日期????時間???名稱
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?????文件????????122??2008-05-14?18:20??sgsdf\Matlab中文論壇--助努力的人完成畢業設計.url

?????文件???????4126??2005-12-05?12:16??sgsdf\program\sgsdf.m

?????文件??????11530??2003-10-05?20:38??sgsdf\program\test_sgsdf.m

?????文件???????3434??2008-05-15?08:26??sgsdf\使用幫助：新手必看.htm

?????目錄??????????0??2008-06-03?13:25??sgsdf\program

?????目錄??????????0??2016-10-17?12:18??sgsdf

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