Hi, i have result from other program. Original serie have 225 observing, but program use only 224. the most domain frequencies are f1=1/224 f2=1/122 f3=1/74,66 f4=1/56 f5=1/24,88 When i know these frequencies a can do, new variable ,nubmers of variavle is 2*nubmer of frequencies: t<-1:225 c1<-cos(2*pi*f1*t) s1<-sin(2*pi*f1*t) . . . s5<-sin(2*pi*f5*t)
and now a can do lm(y~mean+c1+s1+c2+s2+...+s5) . Dieter Menne wrote: > > Peterko <lanikpeter <at> gmail.com> writes: > >> Hello, i need to find in time serie, k=1,2,3...(how if possible) most >> domain >> frequencies and than smooth original serie by Fourier row y=mean + >> a1*Cos(2*pi/freq*t)+b1*Sin(2*pi/freq*t)+a2...... >> >> numbers a1,b1 ... i will have from simple regresion, i need only to find >> k >> msot domain frequensies a than i will have a1,b1,....ak,bk - coeficients. > > > It is very difficult to understand what you want, mainly the part about > the > "simple regression" in Fourier context. For simple filtering/smoothing, > check > > http://markmail.org/message/qt2222yxkwlesy75 > > > Dieter > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > -- View this message in context: http://www.nabble.com/Fourier-Row-and-spectral-analysis-tp22151652p22157212.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.