What do you want? Consider the following:
> v <- matrix(1:9, 3)
> class(v[1,1])
[1] "integer"
> class(as.vector(v))
[1] "integer"
> v2 <- v
> dim(v2) <- NULL
> class(v2)
[1] "integer"
spencer graves
stefan.albrecht at allianz.com wrote:
>
>
>
> Dear all,
>
> I would appreciate a lot, if someone could explain to me in a simple
> way, why the assignment class<- is not always working and one has to
> take as() like in the example below.
>
>
>>(v <- matrix(1:9, 3))
>
> [,1] [,2] [,3]
> [1,] 1 4 7
> [2,] 2 5 8
> [3,] 3 6 9
>
>>class(v)
>
> [1] "matrix"
>
>
>>class(v) <- "integer"
>>class(v)
>
> [1] "matrix"
>
>>v
>
> [,1] [,2] [,3]
> [1,] 1 4 7
> [2,] 2 5 8
> [3,] 3 6 9
>
>
>>(vi <- as(v, "integer"))
>
> [1] 1 2 3 4 5 6 7 8 9
>
>>class(vi)
>
> [1] "integer"
>
>
> With many thanks,
>
> Stefan
> [[alternative HTML version deleted]]
>
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