Re: st: Sample command question

["Austin Nichols" <austinnichols@gmail.com>]

David McClintick--
You need not use -sample- to extract five observations, and you need
not save each sample constructed without replacement as a separate
dataset.

set seed 123
forval x =1910/2000 {
use `x', clear
ds
keep if !mi(`r(varlist)')
forval i=1/10 {
 gen s`i'=uniform()
 sort s`i'
 gen sample`i'=(_n<=5)
 drop s`i'
 }
egen rsum=rowtotal(sample*)
keep if rsum>0
save sampled_`x'
}

On 10/31/06, David McClintick <mcclin47@msu.edu> wrote:
> I apologize for not properly explaining what I intend to do. Hopefully
> this time I will clear up the confusion.
>
> I have 91 datasets, named 1910 to 2000 in increments of 1. Each dataset
> has 1 variable. What I wish to do, is use stata to take a 5 observation
> sample from each dataset, without replacement, and then do so 10 times
> so that I have 10 random samples of 5 observations from each complete
> dataset. Now, I realize that the way I have it set up, Stata would save
> the results in 910 different new datasets. This is where things become
> more difficult. If possible, I would like the results to be saved in a
> single dataset for each original dataset, storing each random sample as
> a different variable. So, instead of 910 new datasets, I would have 91
> datasets with 10 variables in each dataset, and each variable containing
> 5 observations.
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/