[R] Getting names of variables without quotes

[Dieter Menne]

Amarjit Singh Sethi <set_alt <at> yahoo.co.in> writes:

(Please do not use tabs  when sending a data sample, these must be 
manually edited)

V1,V2,V3
15,10,4
6,4,7
10,5,2
8,6,6

This does the work. However, I fear that you are going to use it on 
100 variables, and I would strongly advice againts searching for 
linear relations
that way.

Dieter

x=read.table("sample.txt",header=T,sep=",")
nm = names(x)
for (i in 1:2)
{
  for(j in (i+1):3) # note that you need the ()!
  {
    formula= as.formula(paste(nm[i],"~",nm[j],sep=""))
    slr=lm(formula, data=x)
    smr=summary(slr)
    print(smr)
  }
}