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Re: st: RE: drop duplicates within variable with -by- option
From
David Torres <[email protected]>
To
[email protected]
Subject
Re: st: RE: drop duplicates within variable with -by- option
Date
Mon, 16 May 2011 12:05:57 -0400
As always, Nick, you help so much. Couldn't be more clear.
D
--
David Diego Torres, MA(Sociology)
PhD Candidate in Sociology
2044 Population Studies Center
University of Michigan Institute for Social Research
Ann Arbor MI 48106-1248
Tel 734.763.4098
Fax 734.763.1428
torresd at umich dot edu
Quoting Nick Cox <[email protected]>:
The "by ID" element is not a problem, nor does it call for special action.
Suppose you are looking for duplicates on -x- and -y- and there is
also the idea that you are checking for these within -ID-. The
identifier variable does not have any special role here. You just
want to look for -duplicates- on three variables, e.g.
. duplicates list ID x y
That is, -duplicates- is indifferent to the special meaning of any
identifier variable.
If this does not make things clear, show us a specific example of
what you want
Nick
[email protected]
[author of -duplicates-]
David Torres
I have data in long format and need to drop duplicate observations
within a variable by ID. I've looked at the -duplicates- command and
it doesn't seem to help me get what I want.
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