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How do I return to the row values of a matrix after computing distances
2 messages · qqh5011, David Winsemius
On Nov 7, 2011, at 8:06 AM, qqh5011 wrote:
## Package Needed
library(fields)
## Assumptions
set.seed(123)
nsim<-5
p<-2
## Generate Random Matrix G
G <- matrix(runif(p*nsim),nsim,p)
## Set Empty Matraces dmax and dmin
dmax<- matrix(data=NA,nrow=nsim,ncol=p)
dmin<- matrix(data=NA,nrow=nsim,ncol=p)
## Loop to Fill dmax and dmin
for(i in 1:nsim) {
dmax[i]<- max(rdist(G[i,,drop=FALSE],G))
dmin[i]<- min(rdist(G[i,,drop=FALSE],G[-i,])) }
I filled the dmax and dmin with the distance values I calculated,
but what I really want to fill them with are the rows in G. What
should I do? I tried "which" function but it did not work. Thank you
in advance!!!!
Dear qq5011 ... AKA user1033763; The practice of cross-posting questions to StackOverFlow and rhelp within hours of each other is deprecated, at least on on rhelp. http://stackoverflow.com/questions/8036831/how-to-return-to-the-qualifying-rows-of-original-data If you don't get an answer within some reasonable interval (measured in days, not hours) then feel free to post a follow-up ... with citation of the first posting.
qqh5011 [[alternative HTML version deleted]]
Posting in HTML is likewise deprecated. Please read the Posting Guide were both of these issues and many other sensible requests for professional behavior are detailed
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
(You did do that, and please continue to do so.)
David Winsemius, MD West Hartford, CT