I figured out how to convert the array to a vector. library(irr) M <- matrix(1:50,nc=10) unlist(combn(10, 2, function(v) icc(M[,v]))[7,])
This code will get all I need. Please ignore my question below. Thanks! Daisy -----Original Message----- From: Dai, Hongying, Sent: Thursday, March 29, 2012 4:58 PM To: r-help@r-project.org Subject: RE: [R] How to create arbitrary number of loops in R Thanks, ilai and Christian! Both codes are working but I have one more question. Both codes return results in array format. In my original code, I get icc value from icc(data)$value and use loop to get icc value vector. Under the array format, how can I extract icc value from the array output and turn it into a vector? #ilai's code: library(irr) M <- matrix(1:50,nc=10) c2way <- combn(ncol(M),2) MM <- M[,c2way] dim(MM) <- c(nrow(M),nrow(c2way),ncol(c2way)) MM A<-apply(MM,3,icc) #How can I combine A[[1]]$value, A[[2]]$value, ... into a vector? #Christian's code: library(irr) M <- matrix(1:50,nc=10) combn(10, 2, function(v) icc(M[,v])) #How can I get all values in row 7 as a vector? Thanks! Daisy -----Original Message----- From: ila...@gmail.com [mailto:ila...@gmail.com] On Behalf Of ilai Sent: Thursday, March 29, 2012 10:46 AM To: Dai, Hongying, Cc: r-help@r-project.org Subject: Re: [R] How to create arbitrary number of loops in R On Thu, Mar 29, 2012 at 9:27 AM, ilai <ke...@math.montana.edu> wrote: Oops, sent to fast. A (maybe) clearer solution: f <- function(x,m){ cmway <- combn(ncol(x),m) xx <- x[,cmway] dim(xx) <- c(nrow(x),nrow(cmway),ncol(cmway)) xx } f(M,3) str(sapply(2:4,f,x=M)) And again lapply / apply , or even return icc(xx) in f Cheers Electronic mail from Children's Mercy Hospitals and Clinics. This communication is intended only for the use of the addressee. It may contain information that is privileged or confidential under applicable law. If you are not the intended recipient or the agent of the recipient, you are hereby notified that any dissemination, copy or disclosure of this communication is strictly prohibited. If you have received this communication in error, please immediately forward the message to Children's Mercy Hospital’s Information Security Officer via return electronic mail at informationsecurityoffi...@cmh.edu and expunge this communication without making any copies. Thank you for your cooperation. ______________________________________________ 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.
