This is very simple. Just put the functions in a list and make the list into a matrix.
> f11 <- f12 <- f13 <- f21 <- f22 <- f23 <- function(x) x > F <- list(f11, f12, f13, f21, f22, f23) > F <- matrix(F, byrow=TRUE, 2, 3) > F[[1,1]](4) [1] 4 > Be careful that you get the rows and columns right when you do this with meaningful functions. On Thu, Feb 3, 2011 at 12:22 PM, Samuel Le <samuel...@srlglobal.com> wrote: > Hello, > > Here is a quick suggestion: > F<-function(i,j,a,b,c,d) > { > res<-eval(parse(text=paste("f",i,j,"(a,b,c,d),sep=""))) > return(res) > } > > HTH, > > Samuel > > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Alaios > Sent: 03 February 2011 16:33 > To: R-help@r-project.org > Subject: [R] "Matrix' with Functions > > Dear R members, > I have a quite large of function that are named like that > f11,f12,...f15 > f21,f22,...f25 > .. > f51,f52,...f52 > > These are static (hard-coded) functions that the only common they have is > that they take the same number and type of input fij(a,b,c,d). As you might > understand this is really close to the notion of matrix only that my > 'matrix' contains functions. It would be great if I can address all these > function using a numbering-scheme like F(i,j) where for example > F(1,1) will return the f11(a,b,c,d,). > > I am sure that this might be quite complex to implement so could you please > refer me to some book/tutorial that addresses this kind of topics? > > I would like to thank you in advance for your help > Best Regards > Alex > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > > > __________ Information from ESET NOD32 Antivirus, version of virus > signature database 5843 (20110203) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > __________ Information from ESET NOD32 Antivirus, version of virus > signature database 5843 (20110203) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.