[R] accessing the ellements in an array and factors.

[Bogdan Tanasa]

Thanks Jim ! also found a second way to do by using as.character() eg :
as.character(yyy).


On Fri, Jun 12, 2015 at 3:06 AM, Jim Lemon <drjimlemon at gmail.com> wrote:

> Hi Bogdan,
> I seem to be able to do it like this:
>
> xxx <-array(0, dim=4)
> dimnames(xxx) = list(list_triplet_wells)
> xxx
>    A1:A2:A3   A4:A5:A6     A7:A8:A9 A10:A11:A12
>           0           0           0           0
> yyy<-factor(c("A1:A2:A3", "A4:A5:A6 ",  "A7:A8:A9",   "A10:A11:A12"))
> yyy
> [1] A1:A2:A3    A4:A5:A6    A7:A8:A9    A10:A11:A12
> Levels: A1:A2:A3 A10:A11:A12 A4:A5:A6  A7:A8:A9
> xxx[yyy[1]]
> A1:A2:A3
>        0
>
> Jim
>
>
> On Fri, Jun 12, 2015 at 2:08 PM, David Winsemius <dwinsemius at comcast.net>
> wrote:
> > Cross-posting to SO and Rhelp is deprecated.
> >
> > On Jun 11, 2015, at 8:40 PM, Bogdan Tanasa wrote:
> >
> >> Dear all,
> >>
> >> please could you please with a simple question : I do have an array of
> 32
> >> elements, where each element is indexed by a name : eg :
> >>
> >> list_triplet_wells <-c("A1:A2:A3", "A4:A5:A6 ",  "A7:A8:A9",
>  "A10:A11:A12
> >> ")
> >> xxx <-array(0, dim=4)
> >> dimnames(xxx) = list(list_triplet_wells)
> >>
> >>> From another script, I have an output like :
> >>
> >>> yyy
> >> [1]   A1:A2:A3    B4:B5:B6
> >> 31 Levels:   B4:B5:B6    A1:A2:A3  ...   F4:F5:F6
> >>
> >> so yyy seems to be a factor type. I would need to call the elements of
> xxx
> >> array based on the elements of yyy; eg xxx[yyy].
> >>
> >> How can I do this in order to circumvent the factor type of yyy ?
> Thanks a
> >> lot,
> >>
> >> bogdan
> >>
> >>       [[alternative HTML version deleted]]
> >>
> >
> > As is posting in HTML.
> >
> >> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> >> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> >
> > David Winsemius
> > Alameda, CA, USA
> >
> > ______________________________________________
> > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
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> > and provide commented, minimal, self-contained, reproducible code.
>

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