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Re: st: Creating choice indicator!
From
Scott Merryman <[email protected]>
To
[email protected]
Subject
Re: st: Creating choice indicator!
Date
Tue, 20 Mar 2012 12:27:07 -0500
Something like this?
clear
set obs 5
gen id = _n
expand 5
sort id
bys id: gen order = _n
gen chosen = 0
levelsof id, local(levels)
foreach l of local levels {
if runiform() < .5 { //probability that id is chosen
local a = round(1 +4*runiform(),1)
qui replace chosen= 1 if order == `a' & id == `l' //1 of 5
alternatives is chosen
}
}
drop order
l
Scott
On Tue, Mar 20, 2012 at 11:51 AM, Peter Grand <[email protected]> wrote:
> Dear Statalisters!
>
> How can I create a random binary variable which indicates either only one chosen alternative or none of them within an id variable, e.g. 5 choices for each individual id :
>
>
> id chosen
> 1 0
> 1 0
> 1 1
> 1 0
> 1 0
> 2 0
> 2 0
> 2 0
> 2 0
> 2 0
> 3 0
> 3 1
> 3 0
> 3 0
> 3 0
>
>
> Thank you very much!
>
> Best,
>
> Peter Grand
> grand(at)ihs.ac.at
> Institute for Advanced Studies
> Stumpergasse 56
> 1060 Vienna
>
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