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Re: st: RE: Testing for a particular value and replacing in last observation?


From   Christian Weiß <mail@cweiss.org>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: Testing for a particular value and replacing in last observation?
Date   Fri, 11 Sep 2009 17:59:56 -0400

Exactly!
Cheers!
Chris




On Fri, Sep 11, 2009 at 5:47 PM, Kieran McCaul <Kieran.McCaul@uwa.edu.au> wrote:
> ...
>
> Is this what you mean?
>
> clear
>
> set obs 10
>
> gen x = uniform()*10
>
> set obs `=_N+1'
>
> summ x, meanonly
> local max = r(max)
> replace x=1 if `max'<2 in l
> replace x=2 if `max'>=2 & `max'<5 in l
> replace x=3 if `max'>=5 & `max'<. in l
>
>
>
>
>
> ______________________________________________
> Kieran McCaul MPH PhD
> WA Centre for Health & Ageing (M573)
> University of Western Australia
> Level 6, Ainslie House
> 48 Murray St
> Perth 6000
> Phone: (08) 9224-2701
> Fax: (08) 9224 8009
> email: Kieran.McCaul@uwa.edu.au
> http://myprofile.cos.com/mccaul
> http://www.researcherid.com/rid/B-8751-2008
> ______________________________________________
> If you live to be one hundred, you've got it made.
> Very few people die past that age - George Burns
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Christian Weiß
> Sent: Saturday, 12 September 2009 2:33 AM
> To: statalist
> Subject: st: Testing for a particular value and replacing in last observation?
>
> Dear Statalist,
>
> assume there is one variable x with 10 observations filled with
> random numbers between 0 and 10.
> the 11th observation should carry the value 1 if ANY observation of x
> is <2, 2 if any observation is between 2 and 5, and 3 if any
> observation is bigger than 5.
>
> I tried the following:
>
> local obs = 10
> local count = 0
>
> while `count' <= `obs' {
>
>     replace x = 1 if x < 2 in `count'
>     replace x = 2 if ....and so so on
>
> }
>
> apparently,  this does not work as intended, as this loop does not
> place the values 1, 2, 3 in the last observation but in the
> observation `count'
> I actually need an additional "in"
> replace x = 1 in L if x < 2 in `count'
>
> Unfortunately, stata does not allow for this systanx
>
> Do you have any hint for a workaround?
>
> Best,
>  Christian
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