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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 11:00:44 -0400
" *There is a similar justification for ignoring zero values of the
> other kinds of weights."
I should have said "NOT ignoring zero values."
On Thu, Apr 1, 2010 at 10:44 AM, Steve Samuels <[email protected]> wrote:
> 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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