Date: Wed, 17 Nov 2010 16:20:36 +0000
Reply-To: "Salbod, Mr. Stephen" <ssalbod@pace.edu>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: "Salbod, Mr. Stephen" <ssalbod@pace.edu>
Subject: Re: DO IF
In-Reply-To: <1290009432780-3269261.post@n5.nabble.com>
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Bruce: To deal with the actual problem I did use recode. Now, I'm trying to understand why I cannot combine DO IF, IF, and DO IF into a single statement. I wondering if I'm missing a logical step related to short circuit behavior with sysmis. --Steve
-----Original Message-----
From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of Bruce Weaver
Sent: Wednesday, November 17, 2010 10:57 AM
To: SPSSX-L@LISTSERV.UGA.EDU
Subject: Re: DO IF
Right after posting, I noticed that Stephen does not want to recode SYSMIS to another value (for some reason). So I've modified the RECODE and computation of BOTH_IN_ONE as follows to avoid recoding SYSMIS to 9 in the original variables.
recode practitioner StudentStat
(missing=9) (else=copy) into #P #S .
compute both_in_one = (#P*10) + #S.
format both_in_one (f2.0).
freq both_in_one.
Bruce Weaver wrote:
>
> All those nested DO-IFs get complicated. I'd do something like this
> instead.
>
> recode practitioner StudentStat (missing=9).
>
> compute both_in_one = (practitioner*10) + StudentStat.
> format both_in_one (f2.0).
> freq both_in_one.
>
> * If you need the originally stated group numbers,
> * recode both_in_one into group.
>
> recode both_in_one
> (11 = 1)
> (12 = 2)
> (21 = 3)
> (22 = 4)
> (99 = 5)
> (91 = 6)
> (92 = 7)
> (19 = 8)
> (29 = 9) into group.
> freq group.
> * Check that recode worked as intended.
> crosstabs both_in_one by group.
>
> * Now assign value labels.
>
>
>
> Salbod, Mr. Stephen wrote:
>>
>> Dear Friends,
>>
>> I'm trying to combine following DO IF, IF, and DO IF into one DO IF.
>> I don't want to recode sysmis into another value.
>> When I've combined the codes under a single DO IF, and run the test
>> data, I get only groups 1-4 and the rest missing.
>>
>> Any help will be greatly appreciated.
>>
>> TIA
>>
>> Stephen Salbod, Pace University, NYC
>>
>>
>> DATA LIST / Practitioner 1 StudentStat 2 .
>> BEGIN DATA
>> 11
>> 12
>> 21
>> 22
>>
>> 1
>> 2
>> 1
>> 2
>> END DATA.
>> DO IF (Practitioner EQ 1 AND StudentStat EQ 1).
>> COMPUTE group = 1.
>> ELSE IF (Practitioner EQ 1 AND StudentStat EQ 2).
>> COMPUTE group = 2.
>> ELSE IF (Practitioner EQ 2 AND StudentStat EQ 1).
>> COMPUTE group = 3.
>> ELSE IF (Practitioner EQ 2 AND StudentStat EQ 2).
>> COMPUTE group = 4.
>> END IF.
>> IF (MISSING(Practitioner) AND MISSING(StudentStat)) group = 5.
>> DO IF (MISSING(Practitioner)).
>> + DO IF (StudentStat EQ 1).
>> + COMPUTE group = 6.
>> + ELSE IF (StudentStat EQ 2).
>> + COMPUTE group = 7.
>> + END IF.
>> ELSE IF (MISSING(StudentStat)).
>> + DO IF (Practitioner EQ 1).
>> + COMPUTE group = 8.
>> + ELSE IF (Practitioner EQ 2).
>> + COMPUTE group = 9.
>> + END IF.
>> END IF.
>> EXECUTE.
>>
>>
>
>
-----
--
Bruce Weaver
bweaver@lakeheadu.ca
http://sites.google.com/a/lakeheadu.ca/bweaver/
"When all else fails, RTFM."
NOTE: My Hotmail account is not monitored regularly.
To send me an e-mail, please use the address shown above.
--
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