Hi Bogaso,
You could try this to get integer x-axis values:
library(zoo)
z = zooreg(rnorm(39), start=as.yearmon("2008-01-01"), frequency=12)
acf(ts(z,freq=1))
Steve Chen
On 2010/4/8 下午 03:32, Bogaso wrote:
>
> Please see that correlogram for a arbitrary time series :
>
> acf(zooreg(rnorm(39), start=as.yearmon("2008-01-01"), frequency=12))
>
> What is the meaning of lag 0.2, 0.4, ........ in the plot? Those should not
> be integers? Or I am missing something?
>
> Thanks
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