[R] Generation of missiing values in a time serie...

Gabor Grothendieck ggrothendieck at gmail.com
Mon Dec 12 17:31:53 CET 2005

First we generate some sample data x and its times tt.
Then using the zoo package we create an irregularly
spaced time series.  Now if you want a regularly spaced
time series convert it to ts class.  After loading zoo as
shown below, the R command vignette("zoo") gives more info.

x <- 1:4
tt <- c(1, 3, 4, 6)

x.zoo <- zoo(x, tt) # irregularly spaced time series
x.ts <- as.ts(x.zoo) # regular time series with NAs

On 12/12/05, Alvaro Saurin <saurin at dcs.gla.ac.uk> wrote:
> Hi,
> I am a R begginer and I have a small problem with time series. I was
> wondering if someone could help me
> I am collecting data from packets going through a network, and using
> R for obtaining some simple statistics of connections. However, my
> data is not collected at a constant frequency, so I would like to
> create a evenly spaced TS from my traces, using the minimum time
> difference between two samples as the period for my new TS, and
> filling  the gaps with NA (or 0s).
> I think ther must be some simple solution for this... Anyone could
> help me?
> Thanks in advance.
> --
> Alvaro Saurin <alvaro.saurin at gmail.com> <saurin at dcs.gla.ac.uk>
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