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Re: st: AW: tagging observations where either x or y are true


From   Michael McCulloch <mm@pinest.org>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: AW: tagging observations where either x or y are true
Date   Sun, 25 Oct 2009 15:30:53 -0700

Thanks Martin, that tags some but not all the duplicates of sampleid.
I'm also seeking to condense the list from this:
    sampleid   x     y
        30.1         0      1
        34.1         1      0
        34.1         0      1
        34.3         1      0

to this:
    sampleid   x     y
        30.1         0      1
        34.1         1      1
        34.3         1      0

where sampleid for which x = y ==1 are on one line.
Sorry this escapes me.
Michael


On Oct 25, 2009, at 3:13 PM, Martin Weiss wrote:

>
> <>
>
> Get the tag via
>
> *************
> bys sampleid: gen byte tag=_N>1
> *************
>
>
>
> HTH
> Martin
>
>
> -----Ursprüngliche Nachricht-----
> Von: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Michael
> McCulloch
> Gesendet: Sonntag, 25. Oktober 2009 23:08
> An: Statalist Statalist
> Betreff: st: tagging observations where either x or y are true
>
> I'd appreciate advice on this problem which although apparently simple
> is somewhat vexing.
> Note that for:
> 	sample 30.1 only y is true,
> 	sample 34.3 only x is true,
> but 	sample 34.1 both x and y are true,
>
>     sampleid   x     y
>         30.1         0      1
>         34.1         1      0
>         34.1         0      1
>         34.3         1      0
>
> What I'd like to achieve is only one entry for 34.1, where both x and
> y ==1.
> I can identify 34.1 with -duplicates-, but can't figure out the next
> step of concatenating observations for that sampleid such that x=y=1.
>
>
> Michael McCulloch
> Pine Street Foundation
> 124 Pine Street
> San Anselmo, CA 94960-2674
> tel:	415-407-1357
> fax: 	206-338-2391
> mm@pinestreetfoundation.org
>
>
>
>
>
>
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Michael McCulloch
Pine Street Foundation
124 Pine Street
San Anselmo, CA 94960-2674
tel:	415-407-1357
fax: 	206-338-2391
mm@pinestreetfoundation.org









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