[R] Moving average

[ronggui]

are you looking the function decompose?
see ?decompose

On Thu, 16 Jun 2005 08:04:18 -0400 (EDT)
"Bernard L. Dillard" <bld at math.umd.edu> wrote:

> Good morning all!
> 
> I am attempting to superimpose a moving-average smoother onto a graph of
> daily plots.  These plots (in table[,2] below) span about 350 days and
> looks very noisy.  I'd like for this smoother to plot the average of each
> group of 7 consecutive days (weekly) and show a line which joins these
> series of averages.  Given the definition of MA, the first and last points
> will generally overlap in the average calculation.
> 
> It's probably a one-liner, but I still am having some problems with the
> syntax.  The only part I have correct is the "lines" statement to ensure
> it overlays my original graph.
> 
> Here's the code I have thus far:
> 
> y <- table[,2]
> plot(y,type="l",lty=3)
> lines( ......)  {moving average code here to be placed here}
> 
> Any time series gurus out there?  Be gentle.  I'm an R beginner.
> 
> Thanx!
> 
> Bernard
> 
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