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Re: st: Re: Using NEARMRG
-nearmrg- calls the Stata command -isid- to check that the variable list
uniquely identifies the observations. Have you looked at the data to see if
there are duplicates? Perhaps it's a problem with missing values since isid
will not allow missing values wihtout specifying the missok option. If that
is the problem, I suggest you drop the cases with missing values on either
age or region.
----- Original Message -----
From: "MA V" <firstname.lastname@example.org>
Sent: Wednesday, April 26, 2006 6:44 PM
Subject: RE: st: Re: Using NEARMRG
I know you're the author and I thank you for these and many other programs
that have helped me a lot.
One of the things I tried was dropping all the duplicates for both region
and age in the using file (before doing the merge):
duplicates drop age, force
duplicates drop region, force
This should have made the nearvar unique in the using dataset within
levels of the varlist, right?
But I keep getting the same error message.
Another thing that I forgot to mention is that, in my case age is a string
variable (and yes, I used the option "upper" to prevent getting error
messages related with the fact that the nearvar is a string variable).
If you have any suggestions I would appreciate your help.
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