st: Re: data management - loop?

["Michael Blasnik" <michael.blasnik@verizon.net>]

...
There's a much easier way -- without creating the 250 dummies or any looping:

bysort household var: gen count=_N
bysort household (count): gen byte dummy=count==count[_N]

In the event of ties (two values of var with equal frequency), then both values 
will be included by the dummy.

Michael Blasnik

----- Original Message ----- 
From: "Alexander Staus" <Alexander.Staus@uni-hohenheim.de>
To: <statalist@hsphsun2.harvard.edu>
Sent: Monday, May 21, 2007 11:48 AM
Subject: st: data management - loop?



> Dear Stata users,
>
> in my panel dataset I want a dummy for the most occurred value in a variable.
>
> e.g.  for a household a variable can take values from 1 to 250, value 15 is 
> the most named
> value in one household, so I want a dummy which is 1 when the household named 
> 15
> otherwise 0.
>
> I have some idea but I'm lost in getting the proper loop:
>
>
> tab var, gen(var)
>
>  forvalues i=1(1)250 {
>
>  bysort household: gen N_`i'=sum(var`i')
>  bysort household: replace N_`i'=N_`i'[_N]
> }
>
> * Now some loop for:
>
>  bysort hh: gen dummy=1 if N_1 > N_2 & N_1 > N_3  & N_1 > N_4 ********more
> possible values from 1 to 250 but not every number is named*************  & 
> var1 ==1
>
> * here all other possibilities...
>
> Some idea or an easier way?
*
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