It turns out not to be a misunderstanding about generice functions it was a mistaken assumption about the values being returned from 'fft'. I made the mistaken assumption (based on an EE background) that 'fft' would always return a vector of complex numbers. I didn't realize that 'fft' could also return a time series with complex values. Sorry.
Kevin ---- Martin Maechler <[EMAIL PROTECTED]> wrote: > >>>>> <[EMAIL PROTECTED]> > >>>>> on Thu, 2 Oct 2008 10:02:04 -0700 writes: > > > Sorry, I must be looking at a different section but when I look at 3.4 > in r-intro.pdf I see: > > 3.4 The class of an object > > All objects in R have a class, reported by the function class. For > simple vectors this is just the > > mode, for example "numeric", "logical", "character" or "list", but > "matrix", "array", > > "factor" and "data.frame" are other possible values. > > . . . . > > > This doesn't seem to indicate how/why plot shows a time series for the > "exact" inverse fft yet shows Re vs. Im in a filtered version. > > Then read on, or start re-reading the introduction from the > beginning. In addition to know about classes, you really *must* > understand a bit about generic functions and methods before you > can understand more. > > Martin > > > ---- Dieter Menne <[EMAIL PROTECTED]> wrote: > >> <rkevinburton <at> charter.net> writes: > >> > >> > > >> > My question is how does 'plot' know to implicilty call the plot.ts > (in the > >> case of the full "exact" spectrum > >> > being fed back into the inverse? > >> > >> So the title should be "How does the specific incarnation of object > orientation > >> in R work?" Try, for example, section 3.4 and the "generic" classes in > the > >> R-intro.pdf > > Yes! > > >> 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.
