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atmail
2009 Jan 12
1
x <- 1:2; dim(x) <- 2? A vector or not?
Ran into the follow intermediate case in an external package (w/
recent R v2.8.1 patched and R v2.9.0 devel):
> x <- 1:2
> dim(x) <- 2
> dim(x)
[1] 2
> x
[1] 1 2
> str(x)
int [, 1:2] 1 2
> nrow(x)
[1] 2
> ncol(x)
[1] NA
> is.vector(x)
[1] FALSE
> is.matrix(x)
[1] FALSE
> is.array(x)
[1] TRUE
> x[1]
[1] 1
> x[,1]
Error in x[, 1] : incorrect number of