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st: RE: RE: how to create groups

From   "Nick Cox" <>
To   <>
Subject   st: RE: RE: how to create groups
Date   Tue, 24 Sep 2002 17:26:05 +0100

My reply to Radu Ban

> I am going to interpret this as two Stata variables
> called -what- and -value-. 
> First, we pull out the Group identifiers. 
> One way to select them is that the previous 
> value of -what- is missing. (This holds for the
> very first as well.) 

The reasoning here is loose. This condition also applies
to other observations as well, but for those
the Group is blank, so that doesn't matter, 
I think. 

What's more sensitive is that the procedure 
does assume some blanks separating each
pair of subgroups, i.e. that the number in each  
subgroup is at least 3. 


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