[R] "fill in" values between rollapply

[Gabor Grothendieck]

Here are two  solutions.  Assuming x is a zoo object both return zoo objects:

1. rollapply with na.pad and na.locf:

r <- rollapply(x, 5, mean, by = 5, align = "left", na.pad = TRUE)
na.locf(r)

2. or try this which does not use rollapply at all but assumes x is 1
dimensional:

   n <- length(x)
   a <- ave(x, gl(n, 5, n), FUN = mean)


On Fri, Apr 9, 2010 at 3:32 AM, Brad Patrick Schneid <bpschn01 at gmail.com> wrote:
>
> Hi,
> Sorry ahead of time for not including data with this question.
> Using rollapply to calculate mean values for 5 day blocks, I'd use this:
>
> Roll5mean <- rollapply(data, 5, mean, by=5, align = c("left"))
>
> My question is, can someone tell me how to fill in the days between each of
> these means with the previously calculated mean?  If this doesn't make
> sense, I will clarify and provide data for an example.
>
> Thanks.
> Brad
> --
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