How to duplicate a variable in a dataset in SAS

Question

I have a variable with 54 observations. How do I make the variable repeat several times over in a dataset?

ex:

Var1   Var2   Var3
 2       4      5
 4       5      7
 6       3      6

but I want it to look like

Var1   Var2   Var3
 2       4      5
 4       5      7
 6       3      6
 2       4      5
 4       5      7
 6       3      6
 2       4      5
 4       5      7
 6       3      6

edit:

I'm trying to do in SAS what is done in R by:
x = cbind(1.5, 17, 2.5, 12, 19.3) y = rep(x,times=4) y

I have a do loop in SAS but it just repeats each observation instead of repeating the entire vector.

Answer 1

If you want the entire dataset duplicated, in order, you would repeat the set statement.

data want;
do _iter = 1 to 4;
  do _n_ = 1 to nobs_c;
    set sashelp.class nobs=nobs_c point=_n_;
    output;
  end;
end;
stop;
run;

Of course, you could also just do

data want;
set sashelp.class;
do _n_ = 1 to 4;
  output;
end;
run;

and then just sort the dataset by whatever is appropriate.