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From |
Sergiy Radyakin <serjradyakin@gmail.com> |

To |
"statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: create a variable using the first value in time-series data by group |

Date |
Mon, 10 Jun 2013 22:00:45 -0400 |

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 <pkchen@umd.edu> 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/

**References**:**st: create a variable using the first value in time-series data by group***From:*PKCHEN UMD <pkchen@umd.edu>

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