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Re: st: RE: Re: Multiple value labels


From   "MA V" <ma_v@hotmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: Re: Multiple value labels
Date   Sun, 26 Mar 2006 23:13:26 +0000

Thanks! And once I've assigned the labels, is ti possible to create tables (using the commands table or tabulate) that display both the numeric codes and the value labels?
Thanks,
MA_V



From: "Rosy Reynolds" <rr@dandr.demon.co.uk>
Reply-To: statalist@hsphsun2.harvard.edu
To: "statalist" <statalist@hsphsun2.harvard.edu>
Subject: Re: st: RE: Re: Multiple value labels
Date: Sun, 26 Mar 2006 23:57:54 +0100

The Stata8 equivalent of -levelsof- was just called -levels-.
And labmask will work fine in Stata8 (or 7 for that matter).
Rosy

----- Original Message ----- From: "MA V" <ma_v@hotmail.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Sunday, March 26, 2006 11:41 PM
Subject: RE: st: RE: Re: Multiple value labels


Thanks so much for your suggestion.
One question: I have version 8.2 of Stata so I don't have the "levelsof"
command. Is there anyway of geeting this plug-in for my version? Or is
there a similar version of this command for Stata 8.2? I believe this
command would be very useful to me even in other contexts (that not the
value labels).
Thanks,
MA_V


From: "Nick Cox" <n.j.cox@durham.ac.uk>
Reply-To: statalist@hsphsun2.harvard.edu
To: <statalist@hsphsun2.harvard.edu>
Subject: st: RE: Re: Multiple value labels
Date: Sun, 26 Mar 2006 17:55:15 +0100

Thanks for the plug. I'd have to recommend -labmask-
myself as probably the most user-friendly solution here.

If it didn't exist, the problem yields to a few lines.

* check the assumption of correspondence in
your desired direction:

bysort var1 (var2) : assert var2[1] == var2[_N]

(compare:
How do I list observations in a group that differ on a variable?
http://www.stata.com/support/faqs/data/diff.html)

* get the distinct values of -var2-:

levelsof var2, local(levels)

foreach l of local levels {
su var1 if var2 == "`l'", meanonly
label def var1 `r(min)' "`l'", add
}

By assumption the values of -var1- given -var2-
are identical. So we can do a look-up by a -summarize-
of those values, and add a new value label each
time around the loop.

Then we link the labels to the variable:

label val var1 var1

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

Rosy Reynolds

> Nick Cox's nifty program -labmask-, part of the -labutil-
> suite, will do the
> job. It assigns the values (or optionally value labels) of
> one variable as
> the value labels of another.
> -findit labutil-

MA V

> > I have the following in my data:
> > obs        var1           var2
> > 1         304                House
> > 2         666                Land
> > 3         200                Building
> > 4         304                House
> > 5         304                House
> > ...       ...                  ....
> >
> > where var2 contains the labels for var1. Since I have many
> labels it will
> > not be easy to create the labels for var1 by hand. Is there an easy
> > procedure to make stata recognize that there is an unique
> correspondence
> > between var1 and var2 and to label var1 using var2?

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