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Re: st: single elements of varlist


From   Nick Cox <[email protected]>
To   [email protected]
Subject   Re: st: single elements of varlist
Date   Mon, 28 Mar 2011 09:08:28 +0100

In a word, -tokenize-.

program myprog, rclass
          syntax varlist(numeric min=3) [if] [in]
          marksample touse
          qui count if `touse'
          if r(N) == 0 error 2000

           tokenize "`varlist'"
           su `1' if `touse', meanonly
           local mean1 = r(mean)

           su `2' if `touse', detail
           local median2 = r(p50)

           su `3' if `touse'
           local sd3 = r(sd)

           return scalar results = `mean1' + `median2' + `sd3'
end

Nick

> On Mon, Mar 28, 2011 at 8:53 AM, [email protected]
> <[email protected]> wrote:

>> I am new to programming and I have a basic problem. I need to refer to the
>> single variables in "varlist" and I am not sure how. For example, I might to
>> get the sum of: the mean of the first variable, the median of the second
>> variable and the standard deviation of the third variable.

>> program define myprog, rclass
>> syntax varlist
>> get the mean of variable 1
>> get the median of variable 2
>> get the standard deviation of variable 3
>> return scalar results=(sum of the previous three values)

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