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st: looping to value of a variable


From   Richard Fox <r.p.fox@bham.ac.uk>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: looping to value of a variable
Date   Wed, 22 Feb 2012 15:09:51 +0000

Dear all,

I want to loop to the value of a variable. Let's say I have generated the number of non-missing values in a row of data (maxFU in example below). I want to loop to that value which clearly can differ between records.

The following does the job but feels like cheating.

egen maxFU = rownonmissing(FU1 FU2 FU3 FU4 FU5 )

count 
local N=r(N)
forvalues i = 1/`N' {
					local sp = maxFU[`i']
					forvalues j=1/`sp'	{
								qui replace flag`j'=1 if DFU`j'==.
								}
					}



There must be a simpler way; any ideas? 

Best Regards

Richard Fox


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