Indeed. Thanks and sorry, Costas
PS. also, sorry about sending the original post twice... I did not want to pollute the list any more with an apology then... On 09 Ιουλ 2005, at 3:30 ΜΜ, Uwe Ligges wrote: > Constantinos Antoniou wrote: > >> Hello, >> The subject could be articulated better ;(, but I am stuck... >> In any case, my problem is the following: I am trying to use knn, >> and it requires a classification. So I am using cmeans for this. >> What I want to do is add the classification as a new column in my >> data.frame (to be used for knn). Now, the trick is that I would >> like to name the output of the cmeans classification based on the >> number of clusters (e.g. cmeans30 for 30 clusters). To do this, I >> do the following: >> [The file for this example can be downloaded from: >> http://mit.edu/costas/www/station-1-120103.txt ] >> library(e1071) >> lala <- read.csv("station-1-120103.txt",header=F) >> ll <- cbind(lala$V25,lala$V22) >> num.of.clust=50 >> assign(paste("cmeans",num.of.clust,sep=""),cmeans(ll,num.of.clust)) >> and sure enough if I type cmeans50 I get the output of this cmeans >> run. >> This also works, naturally: >> llc<-cbind(ll,cmeans50$cluster) >> [and I now get three columns, where the third column is the >> cluster ID.] >> However, when I do what I really want (i.e. not call cmeans50 >> explicitly, but through the name that I constructed >> programmatically): >> llc <- cbind(ll,(paste("cmeans",num.of.clust,sep=""))$cluster) >> > > This is a FAQ: use get() > > Uwe Ligges > > > >> I only get two columns (the last term has no effect). >> Any ideas as to what I am doing wrong? >> Thanks a lot! >> Costas >> > > > -- Constantinos Antoniou, Ph.D. Massachusetts Institute of Technology Intelligent Transportation Systems Program 77 Massachusetts Ave., Rm. 1-249, Cambridge, MA 02139 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
