> a <- c(2,5,6,7)
> b <- c(6,3,2,9)
> c = rbind(a,b)
> c
[,1] [,2] [,3] [,4]
a 2 5 6 7
b 6 3 2 9
> class(c)
[1] "matrix" "array"
> c <- data.frame(c)
> c
X1 X2 X3 X4
a 2 5 6 7
b 6 3 2 9
> class(c)
[1] "data.frame"