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Re: st: Combining and repeating value from another dataset

From   Rahber Thariani <>
Subject   Re: st: Combining and repeating value from another dataset
Date   Sun, 14 Apr 2013 10:26:52 -0700

Thanks Nick.

How do I do this using without actually hard coding the value in? That is I want something like gen e = {get variable from Y.dta}, because I will be repeating the process many times.

The situation arises because I am generating, saving and analyzing bootstraps and now want to join the bootstrapped estimates back to the source data. So essentially, take a variable, create 50 bootstrapped estimates, manipulate the estimates, and then stitch together the original variable to the 50 bootstraps. So I have 1 obs in Y.dta and 50 obs in X.dta (where X.dta contains the manipulated bootstrapped values).

Any suggestions? Thanks,


On 4/14/2013 3:38 AM, Nick Cox wrote:
You don't need anything fancy.

Suppose the one value in Y.dta is 42.

In X data, you just go

gen e = 42

That's it. (If the value is a string value, say "Stata is easy", it's
the same story.)

That said, why do this? What analyses need it?


On 14 April 2013 06:19, Rahber Thariani <> wrote:

A question to which I am sure there is a simple answer, but as a novice in
Stata, one I am having a hard time finding.

I have a dataset with variables a, b, c and d (stored in X.dta). There are
about 5000 observations.

In another dataset I have only variable e(stored in Y.dta). There is only
one observation.

I want to create a composite dataset with variables a, b, c, d  and e. I
wish to repeat the same value of e 5,000 times in my new dataset for each of
the existing 5,000 observations of a, b, c, and d.

What do you suggest to create this structure?
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