I would have expected to see the assignment to B[k,] inside the loops.
And to see some connection with the k index in the inner loops if you
did not want all of the rows to be similar. Because the assignment is
outside the loops, it happens only once.
-- David Winsemius
On Apr 17, 2009, at 11:11 AM, emj83 wrote:
I would like to create a matrix in R that looks similar to this:
[,1] [,2] [,3] [,4]
[1,] NaN 1 2 3
[2,] NaN 1 2 4
[3,] NaN 1 2 5
[4,] NaN 2 3 4
[5,] NaN 2 3 5
[6,] NaN 3 4 5
I have the loop below:
where A for example is 5
matrixx<-function(A){
B=matrix(NaN,nrow=(A+1),ncol=4)
for(k in 1:(A+1)){
for(i in 1:(A-2)){
for(j in (i+2):A){
}
}
}
B[k,]=c(NaN,i,(i+1),j)
print(B)
}
But it only prints the final line in:
matrixx(5)
[,1] [,2] [,3] [,4]
[1,] NaN NaN NaN NaN
[2,] NaN NaN NaN NaN
[3,] NaN NaN NaN NaN
[4,] NaN NaN NaN NaN
[5,] NaN NaN NaN NaN
[6,] NaN 3 4 5
Could anyone give me a hand? Would be much appreciated.
Thanks Emma
--
View this message in context:
http://www.nabble.com/numbers-loop-in-R-tp23099591p23099591.html
Sent from the R help mailing list archive at Nabble.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
and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
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.
