using for variable as rowname

Is there a way to use the cycle variable for rowname?

v=1:6
for (a in 1:3){
 for  (b in 4:5) {
  v=rbind(v,a.b=1)
 }
}
v

This above obviously does not work, but I couldn't find out how to use a 

and

b to construct a rowname like 14, 15, 24, 25.

Not pretty, but this does the trick.

v=1:6
nam <- "?"
for (a in 1:3){
   for  (b in 4:5) {
      v <- rbind(v,1)
      nam <- c(nam, paste(a,b,sep="."))
   }
}
rownames(v) <- nam
v

Regards,
Richie.

Mathematical Sciences Unit
HSL


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