st: Re: 'lag' of a string variable

[baum <baum@bc.edu>]

--On Thursday, July 4, 2002 2:33 -0400 statalist-digest 
<owner-statalist@hsphsun2.harvard.edu> wrote:


>    In my dataset there is a variable v1, which is a string variable. I
> try to use l.v1, after i set the time variable (eg, tsset time). I don't
> know why stata do not permit timeseries operators on string variables, it
> seems not reasonable for the lag or lead operators, beyond the difference
> operators
>
> i wonder if there is some sort way so that i can use the laged string
> variable?
Why not just v1[_n-1] ? Apart from missing values in the time domain, that 
will do the same thing.

Kit Baum
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