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re:st: RE: RE: looping a regression, exporting the graphs


From   Christopher Baum <kit.baum@bc.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   re:st: RE: RE: looping a regression, exporting the graphs
Date   Thu, 20 Oct 2011 13:47:56 -0400

<>
Tim said

I run it twice due to the addition of extra conditions in the second run, I suppose I could create another variable to go in the varlist sequence, but it's probably not worth it and I can at least see what the difference is here, rather than guessing some time later what I have coded up. I used capture noisily because I was finding my analysis was stopping and not graphing (or at least stopping halfway through the run, but I may need to revisit this to see why - I think due to collinearity in the regression but I'll have to take another look.


You can also condition producing the graph on success in the estimation: e.g., 

sysuse auto,clear
forv i=3/6 {
	capt reg price mpg weight turn displacement if rep78==`i'
	if !_rc {
		predict double res`i' if e(sample), res
		scatter res`i' mpg, ti("Graph #`i'") 
	}
}

Although there is no regression #6, it just skips working with the nonexistent results.

Kit Baum   |   Boston College Economics and DIW Berlin   |   http://ideas.repec.org/e/pba1.html
An Introduction to Stata Programming   |   http://www.stata-press.com/books/isp.html
An Introduction to Modern Econometrics Using Stata   |   http://www.stata-press.com/books/imeus.html


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