[R] subsetting, aggregating and zoo

[Gabor Grothendieck]

On 10/28/06, antonio rodriguez <antonio.raju at gmail.com> wrote:
> Hi,
>
> Having an zoo object I can subset it to obtain the days where I have the
> values within some range:
>
> is.zoo(z)
> TRUE
>
> subset(z[,1], z[,1]>=5 & z[,1]<= 10) #Yields: Year(day)
>
> 1988(13)  1988(14)  1988(16)  1988(20)  1988(21)  1988(22)  1988(25)
> 1988(26)
> 7.973946  9.933518  7.978227  7.512960  6.641862  5.667780  5.721358
> 6.863729
> 1988(27)  1988(28)  1988(29)  1988(30)  1988(32)  1988(33)  1988(34)
> 1988(35)
>  9.600000  9.049846  9.213438  6.412746  5.543606  7.881596  6.373102
> 7.220562
> ..................................................................................................................
> ..................................................................................................................
>
> How do I could refine the search in order to obtain those consecutive
> days within a specific range? In the above extract:
>
> 1988(26) 1988(27)  1988(28)  1988(29)  1988(30)  1988(33)  1988(34)
> 1988(35)
>  6.863729 9.600000  9.049846  9.213438  6.412746  7.881596  6.373102
> 7.220562
>

If zz is a zoo series time(zz) or equivalently index(zz) gives the times.