Hin-Tak Leung wrote:
> (I have taken off r-bug@, as multiple e-mails hitting r-bug@ probably
> will result in multiple bug reports, knowing most mail server will
> retry)
>
> Tony Plate wrote:
>
>> The help page for "[" says:
>>
>> A third form of indexing is via a numeric matrix with the one co
(I have taken off r-bug@, as multiple e-mails hitting r-bug@ probably
will result in multiple bug reports, knowing most mail server will
retry)
Tony Plate wrote:
> The help page for "[" says:
>
> A third form of indexing is via a numeric matrix with the one column for
> each dimension: each row
Hin-Tak Leung wrote:
> (e-mailing to R-bugs is intentional - the web itnerface seems to
> be down)
>
So is the mail interface... I have alerted our support people, but I
didn't see the problem until I came back from teaching, so they may not
get it fixed before tomorrow.
--
O__ Peter
The help page for "[" says:
A third form of indexing is via a numeric matrix with the one column for
each dimension: each row of the index matrix then selects a single
element of the array, and the result is a vector. Negative indices are
not allowed in the index matrix. NA and zero values are
(e-mailing to R-bugs is intentional - the web itnerface seems to
be down)
> a<- cbind(c(1,2), c(3,4))
> a
[,1] [,2]
[1,]13
[2,]24
> a[cbind(c(2,2), c(2,1))]
[1] 4 2
> a[cbind(c(2,3), c(2,1))]
Error: subscript out of bounds
> a[cbind(c(2,-1), c(2,1))]
Error: negative val
