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Re: st: create a variable using the first value in time-series data by group
From
PKCHEN UMD <[email protected]>
To
[email protected]
Subject
Re: st: create a variable using the first value in time-series data by group
Date
Tue, 11 Jun 2013 00:52:17 -0400
Thank you! It works! I didn't know it was so easy
2013/6/11 PingKuei Chen <[email protected]>:
> Thank you very much! This totally works. I didn't know it was so easy.
>
> 2013/6/10 Sergiy Radyakin <[email protected]>:
>> Once you have the first value figured out, something like this would
>> populate the rest:
>>
>> clear
>> input id year x
>> 1 2000 0.7
>> 1 2001 .
>> 1 2002 .
>> 1 2003 .
>> 2 2000 0.9
>> 2 2001 .
>> 2 2002 .
>> 2 2003 .
>> end
>> bysort id (year): replace x=x[1]
>> list, sepby(id)
>>
>> +----------------+
>> | id year x |
>> |----------------|
>> 1. | 1 2000 .7 |
>> 2. | 1 2001 .7 |
>> 3. | 1 2002 .7 |
>> 4. | 1 2003 .7 |
>> |----------------|
>> 5. | 2 2000 .9 |
>> 6. | 2 2001 .9 |
>> 7. | 2 2002 .9 |
>> 8. | 2 2003 .9 |
>> +----------------+
>>
>>
>> Sergiy
>>
>> On Mon, Jun 10, 2013 at 9:33 PM, PKCHEN UMD <[email protected]> wrote:
>>> Hello Statalist,
>>> I have a time-series cross sections dyad-year dataset. I run the
>>> regression and create the prediction variable for each observation. I
>>> want to take the prediction of the first year of each dyad and times
>>> 1.3. There is one number for the beginning year of every dyad. Then I
>>> want to compare the rest of years of prediction with the beginning
>>> year. My goal is to create a dummy variable that is 1 if any yearly
>>> prediction for that dayd is more than 1.3*the beginning year
>>> prediction.
>>>
>>> I manage to create a variable that contains the 1.3*the first year
>>> prediction using by dyad: gen. But I can only tell stata to fill in
>>> the value of the beginning. The rest of yearly observations are coded
>>> as missing. Is there a command that can autofill the missing value
>>> with the first year prediction I create? Or is there a more succinct
>>> way to create the dummy variable I want?
>>>
>>> Thank you very much!
>>>
>>> --
>>> Ping-Kuei Chen
>>> *
>>> * 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/
>
>
>
> --
> Ping-Kuei Chen
*
* 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/