Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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


From   Antoine Terracol <[email protected]>
To   [email protected]
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 <[email protected]>:
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
<[email protected]> 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/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index