Date:         Tue, 29 Mar 2011 11:24:08 +1100
Reply-To:     Thara Vardhan <vard1tha@police.nsw.gov.au>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Thara Vardhan <vard1tha@police.nsw.gov.au>
Subject:      problem with Aggregate function - thank you
Content-Type: multipart/alternative;

Dear List Members

First of all I would like to convey my heartfelt thanks to all those who
responded with suggestions/solution & syntax
to my problem with the aggregate command.

My apologies if i have not explained more clearly about my data file.

Ariel Barak solution of using identifying duplicates, match sequence and
select command does exactly what I need  i.e
to create a output data file that has a unique legalaction record for
every eventrefnum and incidentnum based on the earliest legal action date.

Here is how i did it using the menu :

Ariel Barak Solution

First sort cases by Erefnum and Inc ref num
Click on

* Identify Duplicate Cases.

Define matching cases by Erefnum
                                    Increfnum

Sort within matching groups by legactdate

Click on primary first

Click on sequential count of matching groups in each case

This will create 2 variables primary first and match sequence

Select if matchsequence =0.

This will give all unique records where there is only one legalactdate for
every eventref number/incidentrefnum.

Save it as file 1.

Select if match sequence not eq 0.

This will give eventref and incref records with multiple legal act dates.

Save this as file2.

In file 2 select if primary first =1.
Execute.

This will give records where the legalactdate is the first.
Save this as file 3.

Than use match file add cases function to merge file1 and file3. This will
give a unique file for all legal actions.

While aggregate command helps me identify the earliest legal action date
through the mode=add variables function - it does not help me select
unique records to create a new datafile.

Thank you once again.

regards
thara





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