LISTSERV at the University of Georgia
Menubar Imagemap
Home Browse Manage Request Manuals Register
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (June 2003)Back to main SPSSX-L pageJoin or leave SPSSX-L (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:   Fri, 6 Jun 2003 14:31:29 -0500
Reply-To:   "Marks, Jim" <Jim.Marks@lodgenet.com>
Sender:   "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:   "Marks, Jim" <Jim.Marks@lodgenet.com>
Subject:   Re: Syntax shortcut help
Content-Type:   text/plain; charset="iso-8859-1"

Jim:

VECTOR plus LOOP will do it:

** sample data. DATA LIST LIST /place month. BEGIN DATA 2 3 1 4 2 2 3 1 2 4 END DATA.

VECTOR plamon(4f8.0). LOOP #i = 1 to 4. COMPUTE plamon(#i) = 0. IF month = (#i) plamon(#i) = place. END LOOP. EXE.

VECTOR will create the variables (playmon1 to playmon4) and process each one through the LOOP in this example. The first number in the VECTOR command indicates the number of new variables to be created; the LOOP command should match.

Make sure that the "root" variable names for your other variables don't have more than 6 characters-- otherwise you get illegal names with two digit numbers.

Cheers

Jim Marks Senior Market Analyst LodgeNet Entertainment Corporation

-----Original Message----- From: Rosenthal, James A [mailto:jimar@ou.edu] Sent: Friday, June 06, 2003 1:53 PM To: SPSSX-L@LISTSERV.UGA.EDU Subject: Syntax shortcut help

Dear SPSSX user:

Am interested to know whether SPPS has any syntax "short-cut" that could be applied in the following or similar situation. Suppose I have two variables:

PLACE = type of placement (1 = foster home 2 = group home 3 = etc)

MONTH = month of placement 1= first month, 2 = second, 3 = third, etc)

Suppose that placement can occur in any of four months. My goal is to create four new variables -- PLAMON1, PLAMON2, PLAMON3, PLAMON4 - that will take on the value of PLACE if the placement occurs in the appropriate month.

So, suppose I have this data:

PLACE MONTH 2 3 1 4 2 2 3 1 2 4

the following new variables with the following values need to be created for each case:

for the first case, PLAMON3 with the value 2 for the second case, PLAMON4 with the value 1 for the third case, PLAMON2 with the value 2 for the fourth case, PLAMON1 with the value 3 for the fifth case, PLAMON4 with the value 2

The following code will implement the above:

if MONTH = 1 PLAMON1 = PLACE. if MONTH = 2 PLAMON2 = PLACE. if MONTH = 3 PLAMON3 = PLACE. if MONTH = 4 PLAMON4 = PLACE.

Is there some short-cut way to implement this code, perhaps with "do loop - end loop" or something like this? In the example here, there are only fourth months but in reality I have about 40 months and need to implement similar logic for about 10 variables. So, if there is a short-cut that would be great.

Many thanks for looking at this and for any help you may be able to provide.

Jim

James A. Rosenthal, Ph.D. Professor University of Oklahoma School of Social Work 1005 Jenkins Ave. Norman, OK 73019

phone: 405-325-1401 fax: 405-325-7072 e-mail: jimar@ou.edu


Back to: Top of message | Previous page | Main SPSSX-L page