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st: Draw a random sample of my data...


From   ma9545@bdvb.de
To   statalist@hsphsun2.harvard.edu
Subject   st: Draw a random sample of my data...
Date   Thu, 27 Sep 2012 16:19:35 +0200 (CEST)

Dear friends, I will code a subset of my data. I used the "sample"
command..However, I would like to fix my random sample, so that I can
generate the same sample again..For this I used the "set seed" command.
However, if I rerun the dofile I get different samples in my random
sample. Here is my dofile:

clear;
use all_data8;
sort countryID year;

by firmID, sort: gen firms = _n;
keep if firms==1;

by countryID, sort: egen countryfirms = total(firms);

keep if countryID==244;

set seed 260581;

sample 63;

save usfirms_1, replace;



Is there a bug in stata, or what is wrong? Please help.
Mehmet Altun...
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