Re: st: creating count within id & date

[Richard Williams <Richard.A.Williams.5@nd.edu>]

At 04:02 PM 2/27/2005 +1100, Richard Hiscock wrote:
> Dear Statalist,
>
> I have the following data structure
>
>    id       date        var1        var2
>
>    1        16267         x         53
>    1        16267         y        106
>    1        16267         y        84
>    1        16267         y        90
>    1        16267         z         76
>    1        16267         z         65
>    1        16298         x         87
>    1        16298         y        76
>    2        15678         x        98
>    2        15678         y        98
>    2         16541        x        150
>
> etc
> I wish to create identifier (visitno) 1,2,3,... for each sequential date 
> within id.
Your code seemed fine to me, so it isn't clear to me what you want.  Could 
you indicate how you want the above records to be coded?  Also, would it 
just be a matter of adding the -stable- parameter to sort?

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