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Re: st: RE: Continuous vs discrete variables.


From   Jean-Benoit Hardouin <[email protected]>
To   [email protected]
Subject   Re: st: RE: Continuous vs discrete variables.
Date   Fri, 20 Jan 2006 17:04:38 +0100

My consolation is that my proposition is a little bit more elegant than the Stas's one, because I use "else" and "QUI inspect" !!
Jean-Benoit

Jean-Benoit Hardouin a �crit :


Oups, Stas is the faster ! :o)
Jean-Benoit

Jean-Benoit Hardouin a �crit :

Salut Amadou,
A solution is to use -inspect- and to use r(N_unique) which contains the number of modalities (without "missing values").
For example :
unab varlist: *
local binary
local categorical
local numerous
foreach i of varlist `varlist' {
qui inspect `i'
if `r(N_unique)'==2 {
local binary `binary' `i'
}
else if `r(N_unique)'<5 {/*or to an other value*/
local categorical `categorical' `i'
}
else {
local numerous `numerous' `i'
}
}
di "`binary'"
di "`categorical'"
di "`numerous'"

Best,
Jean-Benoit

[email protected] a �crit :


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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