On Tue, 7 Jun 2011, Riccardo (Jack) Lucchetti wrote:
On Tue, 7 Jun 2011, Sven Schreiber wrote:
>
> [Z]eroes look like valid data, which in this case they are
> not. Imagine that further down you do something with x in a
> restricted sample, and then revert to the full sample again.
Point taken.
In CVS, a newly declared series is now given NA values.
Allin