R annoyances 2005-05-19 - By Patrick Burns
(a) There is 'stable.apply' in S Poetry that looks to me like it should
work in R, but I haven't tested it.
Patrick Burns
Burns Statistics
patrick@(protected)
+44 (0)20 8525 0696
http://www.burns-stat.com
(home of S Poetry and "A Guide for the Unwilling S User")
Chalasani, Prasad wrote:
>Dear R Folks,
>I'm a big fan of R, but there are a couple of things
>that repeatedly annoy me, and I wondered if anyone
>has neat ways to deal with them.
>
>(a) When using "apply" row-wise to a matrix, it returns
> the results column-wise, and to preserve the original
> orientation, I've to do a transpose. E.g. I've to keep
> doing a transpose, which I consider to be quite annoying.
>
> transformed.mtx <- t(apply( mtx, 1, exp))
>
>(b) When extracting 2 or more columns of a matrix,
> R returns the result as a matrix, BUT when extracting
> just one column, it returns a vector/array, rather than
> a matrix, so I've to keep doing as.matrix, which is annoying.
>
> sub.mtx <- as.matrix(mtx[,1])
>
> Of course I could write a suitable function
> cols <- function(mtx,range) as.matrix(mtx[, range])
> but then I lose the syntactic sugar of being able to say "[,1]".
>
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>
>
>
>
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