Of course not, the original question wants the 1st of doubletons.
Ashim
On Wed, Jan 7, 2009 at 7:54 AM, Steven Samuels <[email protected]> wrote:
>
> For that matter, it won't find singletons either.
>
> -Steve
> On Jan 6, 2009, at 9:08 PM, Steven Samuels wrote:
>
>>
>> It will not uniquely identify the first occurrence if there are
>> triplets or longer runs. How would an analyst know there are none?
>>
>> -Steve
>>
>>
>> On Jan 6, 2009, at 8:00 PM, Ashim Kapoor wrote:
>>
>>> i think it does identify the first occurance,
>>> here is the output
>>>
>>>
>>> +---------------------------------------------+
>>> | var1 j |
>>> |---------------------------------------------|
>>> 1. | monopolar monopolar |
>>> 2. | bipolar bipolar |
>>> 3. | bipolar bipolar |
>>> 4. | bipolar bipolar |
>>> 5. | monopolar monopolar |
>>> |---------------------------------------------|
>>> 6. | nodiathrm nodiathrm |
>>> 7. | diathermy[2] diathermy[1] |
>>> 8. | diathermy[2] diathermy[2] |
>>> 9. | bipolar bipolar |
>>> 10. | monopolar monopolar |
>>> |---------------------------------------------|
>>> 11. | diathermy[2] diathermy[1] |
>>> 12. | diathermy[2] diathermy[2] |
>>> 13. | . . |
>>> 14. | . <- denotes missing . <- denotes missing |
>>> 15. | . . |
>>> |---------------------------------------------|
>>> 16. | monopolar monopolar |
>>> 17. | diathermy[2] diathermy[1] |
>>> 18. | diathermy[2] diathermy[2] |
>>> 19. | . . |
>>> 20. | . . |
>>> +---------------------------------------------+
>>>
>>> no ??
>>>
>>> Thank you,
>>> Ashim
>>> On Tue, Jan 6, 2009 at 6:20 PM, Ashim Kapoor
>>> <[email protected]> wrote:
>>>> I would do: -
>>>>
>>>> Suppose your variable is called var
>>>>
>>>>
>>>> gen j=var
>>>> replace j="diathermy[1]" if j[_n+1]=="diathermy[2]" &
>>>> j=="diathermy[2]"
>>>>
>>>> Then j would have what you want.
>>>>
>>>> I think this should do it.
>>>>
>>>> Thank you,
>>>> Ashim.
>>>>
>>>> ue, Jan 6, 2009 at 1:22 PM, b. water <[email protected]>
>>>> wrote:
>>>>> dear all,
>>>>>
>>>>> stata 8.2 xp pro,
>>>>>
>>>>> i have a var like this:
>>>>>
>>>>> monopolar
>>>>> bipolar
>>>>> bipolar
>>>>> bipolar
>>>>> monopolar
>>>>> nodiathrm
>>>>> diathermy[2]
>>>>> diathermy[2]
>>>>> bipolar
>>>>> monopolar
>>>>> diathermy[2]
>>>>> diathermy[2]
>>>>> .
>>>>> . <- denotes missing
>>>>> .
>>>>> monopolar
>>>>> diathermy[2]
>>>>> diathermy[2]
>>>>> .
>>>>> .
>>>>>
>>>>> what i want to achieve is for every first encountered diathermy
>>>>> [2] to be changed to diathermy[1], while leaving the second
>>>>> occurence as diathermy[2]. is this possible in stata? if it can
>>>>> be done, would appreciate advice/help on how to achieve it.
>>>>>
>>>>> thank you,
>>>>> bw
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>>
>
> Steven Samuels
> 845-246-0774
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