Thank you Michael for your suggestion. It worked nicely too!
Marcella
>>> Michael Blasnik <[email protected]> 10/26/2006 11:15 AM
>>>
...
If you can read in the dataset, then I'd recommend using the -sample-
command. But if you can't, then you can :
use myfile if uniform()<.1
which will select about 10% of the observations. If you want exactly
10%,
then use something bigger than 0.10 and then use -sample- :
use myfile if uniform()<.15
sample 100000
You probably want to set the random number seed before any of these
approaches if you want replicable results.
Michael Blasnik
----- Original Message -----
From: "Marcella Sapun" <[email protected]>
To: <[email protected]>
Sent: Thursday, October 26, 2006 10:57 AM
Subject: st: random sample
> Dear statalisters:
>
> I want to read randomly 10% of a data set that contains about 1
million
> records and 100 variables. How do I do that in stata?
>
> Thanks,
>
> Marcella
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