[R] Missing basic understanding of classes, generic functions and methods

Martin Maechler maechler at stat.math.ethz.ch
Fri Oct 3 09:16:53 CEST 2008

>>>>>   <rkevinburton at charter.net>
>>>>>     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.


    > ---- Dieter Menne <dieter.menne at menne-biomed.de> 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


    >> Dieter

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