# Re: st: random draw of single variable, not whole data

 From Antoine Terracol To statalist@hsphsun2.harvard.edu Subject Re: st: random draw of single variable, not whole data Date Thu, 26 Feb 2009 20:31:29 +0100

```You're correct.

building on Jeph's solution:

clear
set obs 10
g x=rnormal()
g y=x[int(_N*uniform())+1]
li

Antoine

Austin Nichols wrote:
```
```Antoine Terracol <terracol@univ-paris1.fr>:
Except the poster wanted resampling with replacement, so you need to
generate a random obs to draw from (for each obs) from the integers 1
to N (not simply randomize the order of obs).  Look in bsample.ado for
a "fast method for resample of size _N"

On Thu, Feb 26, 2009 at 2:12 PM, Antoine Terracol
<terracol@univ-paris1.fr> wrote:
```
```In addition to -bsample- and -merge-, another solution is:

clear
set obs 10
g x=rnormal()
g rnd=uniform()
egen rank=rank(rnd)
g y=x[rank]
li
drop rank

Antoine

Florian Wakolbinger wrote:
```
```Dear all,

is it possible to randomly draw numbers out of a variable x and write it
into another variable y

i.e. if

x
1
2
3
4
5

then y could be, for instance

y
3
5
3
2
4

all numbers in y are randomly drawn from x. how is it possible to
construct such a variable y in stata?

thanks, and kind regards
florian

```
```*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/

```
```

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/
```