This example illustrates how it is done. David
----- Original Message -----
From: Joseph Coveney <[email protected]>
Date: Monday, January 12, 2004 10:58 pm
Subject: Re: st: How do I fill in missing values using last-observation-carried-fo
>
> replace dummy = dummy[_n-1] if dummy >= .
>
> Joseph Coveney
>
> -------------------------------------------------------------------
> ---------
>
> z-da wrote:
>
> >Is there an easy way of implementing the following task in STATA? (It
> >sounds a very easy task, but it goes beyond my limited knowledge
> of STATA.)
> >
> >Say, I have a data series with two variables: date, dummy
> >
> >date dummy
> >1/1/03 1
> >1/2/03 .
> >1/3/03 3
> >1/4/03 .
> >1/5/03 .
> >1/7/03 2
> >1/8/03 .
> >1/9/03 .
> >1/10/03 .
> >1/11/03 4
> >1/12/03 .
> >1/13/03 .
> >.......
> >
> >I just want to fill the missing value, using the previous value
> until it
> >changes (or the last-observation-carried-forward method), ie, to get
> >
> >date dummy
> >1/1/03 1
> >1/2/03 1
> >1/3/03 3
> >1/4/03 3
> >1/5/03 3
> >1/7/03 2
> >1/8/03 2
> >1/9/03 2
> >1/10/03 2
> >1/11/03 4
> >1/12/03 4
> >1/13/03 4
> >.......
> >
> >
> >
> >
>
>
>
>
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
