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RE: st: RE: Accessing the number of changes made by a "replace" command


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: Accessing the number of changes made by a "replace" command
Date   Fri, 18 Mar 2005 10:54:18 -0000

If you let me know what is "not quite right"
about -linkplot-, I will think about those
details. 

Nick 
n.j.cox@durham.ac.uk 

David Fisher
 
> Oops.  Yes, that would do it.  That was embarrassingly 
> simple.  Thanks!
> Also, thankyou for the "linkplot" command -- it's pretty much 
> exactly what I 
> needed, and I've managed to get round the few things that 
> weren't quite  right.
 
Nick Cox

> >I think you need to implement this yourself.
> >If you have a variable holding
> >the previous values, then after each change
> >you compare latest version with the previous values;
> >exit if no differences; otherwise replace
> >previous with latest, and loop again.

David Fisher

> > > I am attempting to create a "while" loop that executes, 
> amongst other
> > > things, a "replace" command on a particular variable.  I
> > > would like this
> > > loop to continue until the "replace" command cannot make any
> > > more changes to
> > > the data.  In order to do this I would like to be able to
> > > access the number
> > > of (real) changes made by the "replace" command, so that I
> > > can say something
> > > like "loop while (number of real changes)!=0".  Is there a
> > > way to do this in
> > > Stata?  I thought there might be an underscore variable that
> > > would do this,
> > > but I can't find one.

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