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Re: st: Loop to replace values of a variable
From
emanuele mazzini <[email protected]>
To
[email protected]
Subject
Re: st: Loop to replace values of a variable
Date
Wed, 18 Dec 2013 14:44:38 +0100
Oh, yes, I see. Thank you very much for your answers, but I may have
oversimplified, since what you said would fit in this case, as x is
exactly = _n/10, but my problem is slightly more complex.
What if the values I want to replace go from -2.5 to 2.15, still with
a 0.1 interval? In this case I'd still need a loop, right?
2013/12/18 Maarten Buis <[email protected]>:
> no need to loop:
>
> gen x = _n*.1
>
> Hope this helps,
> Maarten
>
>
> On Wed, Dec 18, 2013 at 2:33 PM, emanuele mazzini
> <[email protected]> wrote:
>> Dear all statalist users,
>>
>> I would like to program a (relatively) simple loop to replace the
>> values of a variable I created, but I cannot figure it out how to
>> write the syntax.
>>
>> The structure of my data is very simple:
>> I have 300 observations and a variable, say x, that in the first cell
>> (i.e. for n=1) is equal to 0.1, while it is missing for all other 299
>> cells. Data look like:
>>
>> n x
>> 1 0.1
>> 2 .
>> 3 .
>> 4 .
>> .
>> .
>> .
>> .
>> .
>> 299 .
>> 300 .
>>
>> I would like the loop to replace the missing values of my variable by
>> going from cell 2 to cell 300, and to have a replace that would be at
>> a 0.1 intervals, so as to obtain data that look like:
>>
>> n x
>> 1 0.1
>> 2 0.2
>> 3 0.3
>> 4 0.4
>> .
>> .
>> .
>> .
>> .
>> 299 29.9
>> 300 30
>>
>> I can obviously do it by hand, but a loop would be naturally much more
>> efficient!
>> Does anyone know how to make it?
>>
>> Thank you in advance.
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/faqs/resources/statalist-faq/
>> * http://www.ats.ucla.edu/stat/stata/
>
>
>
> --
> ---------------------------------
> Maarten L. Buis
> WZB
> Reichpietschufer 50
> 10785 Berlin
> Germany
>
> http://www.maartenbuis.nl
> ---------------------------------
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/