Re: [R] accessing arrays

From: Lars Rohrschneider <hu-student_at_web.de>
Date: Wed 03 Jan 2007 - 21:57:28 GMT

Thanks all for your hints and extensive codes. With list it seemed to work. lars

Gabor Grothendieck wrote:
>
> Or you could define it as your own class and define your own print and
> other methods, e.g.
>

>> X <- structure(array(1:8, c(2,2,2)), class = "twomats")
>> attr(X, "DIMNAMES") <- list(list(c("No", "Yes"), c("No", "Yes")),

> + dimnames = list(c("No", "Yes"), c("big", "small")))
>>
>> print.twomats <- function(x, ...) {

> + Y <- list(X[,,1], X[,,2])
> + for(i in 1:2) {
> + dimnames(Y[[i]]) <- attr(x, "DIMNAMES")[[i]]
> + print(Y[[i]])
> + }
> + }
>>
>> X

> No Yes
> No 1 3
> Yes 2 4
> big small
> No 5 7
> Yes 6 8
>
>
>
>
> On 1/3/07, Patrick Burns <pburns@pburns.seanet.com> wrote:
>> You can't do that.  If you want to have different labels
>> on the first two dimensions, then a 3-dimensional array
>> doesn't seem to be the natural data structure.
>>
>> I would suggest two matrices held in a list.
>>
>> Patrick Burns
>> patrick@burns-stat.com
>> +44 (0)20 8525 0696
>> http://www.burns-stat.com
>> (home of S Poetry and "A Guide for the Unwilling S User")
>>
>> downunder03 wrote:
>>
>> >hi all. how can i adress a array directly. for example i wanna give
>> array 1
>> >other labels than array 2. How can I overcome this problem?
>> >
>> >...this doesn't work
>> >
>> >tab <- array(1:8, c(2, 2, 2))
>> >dimnames(tab[,,1]) <- list(c("No","Yes"), c("No","Yes"),c("ARRAY1"))
>> >dimnames(tab[,,2]) <- list(c("big","small"),
>> c("small","big"),c("ARRAY2"))
>> >
>> >
>> >
>> >
>> >
>>
>> ______________________________________________
>> R-help@stat.math.ethz.ch mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>

>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
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Received on Thu Jan 04 11:41:03 2007

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