Hi folks,
I am confused whether the following is a bug or it is fine
Here is the explanation
a <- zoo(c(NA,1:9),1:10)
Now If I do
rollapply(a,FUN=mean,width=3,align="right")
I get
> rollapply(a,FUN=mean,width=3,align="right")
3 4 5 6 7 8 9 10
NA NA NA NA NA NA NA NA
But I shouldn't be getting NA right ? i.e for index 10 I should get
(1/3)*(9+8+7)
Similarly
> rollapply(a,FUN=mean,width=3)
2 3 4 5 6 7 8 9
NA NA NA NA NA NA NA NA
Zoo version :
> installed.packages()["zoo","Version"]
[1] "1.6-3"
>
My machine details
> sessionInfo()
R version 2.10.1 (2009-12-14)
i386-pc-intel32
locale:
[1] LC_COLLATE=English_India.1252 LC_CTYPE=English_India.1252
LC_MONETARY=English_India.1252 LC_NUMERIC=C
[5] LC_TIME=English_India.1252
attached base packages:
[1] stats graphics grDevices datasets utils methods base
other attached packages:
[1] zoo_1.6-3 rcom_2.2-1 rscproxy_1.3-1 Revobase_3.2.0
loaded via a namespace (and not attached):
[1] grid_2.10.1 lattice_0.18-3 tools_2.10.1
>
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