Date:         Sun, 29 Aug 2010 23:48:33 +0800
Reply-To:     Eins Bernardo <einsbernardo@yahoo.com.ph>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Eins Bernardo <einsbernardo@yahoo.com.ph>
Subject:      Re: How to automatically erase ?
Comments: To: Richard Ristow <wrristow@mindspring.com>
In-Reply-To:  <7.0.1.0.2.20100825174104.03776fd0@mindspring.com>
Content-Type: multipart/alternative;

Let me rephrase my question:
 
Suppose the dataset is as follows:
 
Group    Item1       Item2       item3
1             1             4 
1             2             5
1             3             6
2
2
2

--- On Wed, 8/25/10, Richard Ristow <wrristow@mindspring.com> wrote:


From: Richard Ristow <wrristow@mindspring.com>
Subject: Re: How to automatically erase ?
To: SPSSX-L@LISTSERV.UGA.EDU
Date: Wednesday, 25 August, 2010, 9:51 PM


At 10:55 AM 8/25/2010, Eins Bernardo wrote:


I will do some restructuring of my dataset, then recoding and, subsequently, compute a variable using the following syntax (We will call this syntax A)
 
SORT CASES BY Target .
CASESTOVARS
   /ID = Target
   /GROUPBY = VARIABLE.

RECODE ITEM1.1 to ITEM2.5 (MISSING=999).
MISSING VALUES ITEM1.1 to ITEM2.5 (999).

COMPUTE obs_var1 = var(item1.1,item1.2,item1.3,item1.4,item1.5) .
It looks like you want the variances of variables ITEM1 and ITEM2 within each value of variable Target. Why not this (not tested)?

AGGREGATE OUTFILE=*
   /BREAK    =Target
   /obs_var1 =SD(item1)
   /obs_var2 =SD(item2).

COMPUTE obs_var1=obs_var1*obs_var1.
COMPUTE obs_var2=obs_var2*obs_var2.

Sorry about taking the standard deviation and then squaring, but AGGREGATE doesn't seem to have Variance as a summarizing function. 
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