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st: foreach and postfile


From   Simon Moore <simoncmoore@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: foreach and postfile
Date   Thu, 13 Dec 2007 10:33:21 +0000

I have a question which I think I already know the answer to (I'm sure I've seen this asked on Statalist before but can't find the post).

I'm running something along the lines of:-

postfile coef id var1 var2 var3 using "`dir'\fit.dta", replace
foreach num of numlist 1(1)1000 {
qui logit expcont var1 var2 var3 if id == `num'
post coef (`num') (_b[var1]) (_b[var2]) (_b[var3])
}
postclose coef

occasionally the logit does not work as planned, gives an error (e.g. "[var] not found") and the foreach loop grinds to a halt. I would much rather capture the error somehow, post it to the file coef and have the loop move onto the next iteration. Would anyone here happen to have encountered a similar problem and worked out a solution?

Regards
Simon

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