[R] Outer, kronecker, etc.

[baptiste auguie]

you may want to look into Hadley's new package plyr for this kind of  
operation.

baptiste

On 12 Nov 2008, at 17:51, Stavros Macrakis wrote:

> By-the-way^2: is there some Xapply function that maps a function over
> all the elements of a structure (vector, matrix, list, ...) and
> preserves the original structure?  For example, I'd want
> Xapply(matrix(1:4^2,2,2),sqrt) == sqrt(matrix(1:4^2,2,2)).  In this
> case, I'd use Xapply(as.character,mm), because as.character returns a
> vector.

_____________________________

Baptiste Auguié

School of Physics
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK

Phone: +44 1392 264187

http://newton.ex.ac.uk/research/emag