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Re: st: RE: Continuous vs discrete variables.


From   Stas Kolenikov <[email protected]>
To   [email protected]
Subject   Re: st: RE: Continuous vs discrete variables.
Date   Fri, 20 Jan 2006 09:47:48 -0600

see -inspect-. You can get the number of unique values as r(N_unique)
after it, and use that to create your lists:

local binary
local categ
local cont
unab allvar: *
foreach x of varlist `allvar' {
  inspect `x'
  if r(N_unique) == 2 {
     local binary `binary' `x'
  }
  if r(N_unique) > 2 & r(N_unique)< 10 {
     local categ `categ' `x'
  }
  if r(N_unique) > 9 & r(N_unique) < . {
     local cont `cont' `x'
  }
}

On 1/20/06, [email protected] <[email protected]> wrote:
>
>
> Maarten wrote:
>
>
>
>
>
>  > Amadou:
>  > If your discrete variable is consists of zeros and
>  > ones, than you usually don't have to. If one
>  > variable distinguishes between more than two
>  > groups, than you can use -xi- prefix.
>
>  -------------------------------------------------------------------------------
>
>
>
> Dear Maarten,
>
> Thanks for answering. Actually, I am not in a regression or summarizing context.
> I have a huge dataset and would like, among other things, to know which
> variables
> are dummies, which are categorical (more than two but countable modalities),
> which
> are discrete type (1,2,3,...) and which are continuous. I want to place each
> group in
> local macros for future use.
> Cheers.
> Amadou.
>
>
> *
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>


--
Stas Kolenikov
http://stas.kolenikov.name

*
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