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Re: st: Keeping an entire cell based on an observation taking a particular value


From   Dooruj Rambaccussing <dooruj.rambaccussing@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Keeping an entire cell based on an observation taking a particular value
Date   Mon, 19 Mar 2012 21:14:17 +0000

I was wondering if total would be appropriate if I wanted to find
whether Xk==2 now (excluding other values) ?

Best,

D





On Mon, Mar 19, 2012 at 8:57 PM, Dooruj Rambaccussing
<dooruj.rambaccussing@gmail.com> wrote:
> Thank you very much Nick. It is very helpful.
>
> On Mon, Mar 19, 2012 at 8:50 PM, Nick Cox <njcoxstata@gmail.com> wrote:
>> I understand this as follows. You have panel data defined by variables
>> -id- and -time- and a bundle of other variables -X*-.
>>
>> You want to keep any panels such that any value of -Xk- within a panel is 1.
>>
>> egen OK = total(Xk == 1), by(id)
>> edit if OK
>>
>> If and only if that is what you want
>>
>> keep if OK
>>
>> Nick
>>
>> On Mon, Mar 19, 2012 at 8:33 PM, Dooruj Rambaccussing
>> <dooruj.rambaccussing@gmail.com> wrote:
>>
>>> I am a beginner to stata. I was wondering if someone can help me with
>>> the following issue:
>>>
>>> I got a dataset with an id and time, and certain observations say X1,
>>> X2 ...... Xk. My variable  Xk has got missing values. I would like to
>>> keep an id when a certain condition holds, suppose Xk(t) ==1, and I
>>> would also like to keep the missing obs. Can anyone help me with this
>>> ?
>>
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