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st: RE: RE: how to create groups
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,
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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