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Re: st: collapse with fweights
From
Steve Samuels <[email protected]>
To
[email protected]
Subject
Re: st: collapse with fweights
Date
Thu, 1 Apr 2010 10:44:57 -0400
I think that is the proper behavior. A frequency weight of zero is
special: it implies that there is _no_ observation with the variable
value combination recorded on the data line.* If that's not true,
then do a separate -collapse, sum- on "vars2" without the [fw] option
and -merge- with the result of the other -collapse-.
*There is a similar justification for ignoring zero values of the
other kinds of weights.
Steve
On Wed, Mar 31, 2010 at 3:33 PM, Eric Sigurdson
<[email protected]> wrote:
>
> collapse (sum) vars1 (rawsum) vars2 [fw = fweight]
>
> The manual states that the computation of `rawsum' should ignore the
> specified weight, but I find that the sum this command puts out does
> not include any of the observations of vars2 for which fweight=0 ,
> despite the (rawsum) specification. Is there any way to stop this
> behavior, or perhaps some better way to approach processing the data
> in this manner?
--
Steven Samuels
[email protected]
18 Cantine's Island
Saugerties NY 12477
USA
Voice: 845-246-0774
Fax: 206-202-4783
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