Bill Simpson wrote: > Thanks Jim for the help. > > I forgot to say that one of my main snags is figuring how how to chop up > the one long (44100 samples) vector into pieces (400 of them). > > This is my C-inspired way of thinking but there must be a better way in > R. > > cyclelength=44100/400 > for i= 1 to 400 > for j= 1 to cyclelength > y[i,j]=x[i*j] > next > next > > Once that's done I can average over rows > I can understand your problem as C was my main programming language when I discovered S-PLUS and then R. If your initial vector is named "y":
x<-matrix(y,nrows=400,byrow=TRUE) As I get 110.25 elements per row, matrix is going to whinge about this, so perhaps you should think about trimming your initial vector somehow. Jim ______________________________________________ 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.
