Syntax: when did it happend for the last time?

[Sungeun Chung]

Dear experts.

I have a problem in creating syntax command; please help me. I appreciate
your help.

I have a data set like this:

DATA LIST FREE/ var1 var2 var3 var4 var5.
BEGIN DATA
+1  -1 +1  +1 +1
+1  -1  -1  +1  +1
+1 -1   -1  -1   + 1
+1  +1  -1  +1  + 1
END DATA.


For all variables, +1 indicate no change, - 1 indicates change.
For each case, I want to know when "-1" (change) happend for the last time.

For example, I expect

+1  -1 +1  +1 +1   2
+1  -1  -1  +1  +1   3
+1 -1   -1  -1   + 1  4
+1  +1  -1  +1  + 1 3

in which the last variable indicate when "-1" occurred for the last time.

I want to creat a syntax file (probably using "vector and loop" command").
Can anyone help me out here?

Thank you very much for your help!

Sungeun


Sungeun Chung, Ph.D.
Assistant Professor
Department of Communication
Sallee Hall 215
1 University Circle
Western Illinois University
Macomb, IL 61455
Tel: [phone]; FAX: [phone]

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[Spousta Jan]

compute change = 0.
do repe v = var1 to var5 / i = 1 to 5.
- if v = -1 change = i.
end repe.
exe.

Best regards,

Jan

-----Original Message-----
From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of Sungeun Chung
Sent: Thursday, September 11, 2008 6:21 PM
To: [hidden email]
Subject: Syntax: when did it happend for the last time?

Dear experts.

I have a problem in creating syntax command; please help me. I appreciate your help.

I have a data set like this:

DATA LIST FREE/ var1 var2 var3 var4 var5.
BEGIN DATA
+1  -1 +1  +1 +1
+1  -1  -1  +1  +1
+1 -1   -1  -1   + 1
+1  +1  -1  +1  + 1
END DATA.


For all variables, +1 indicate no change, - 1 indicates change.
For each case, I want to know when "-1" (change) happend for the last time.

For example, I expect

+1  -1 +1  +1 +1   2
+1  -1  -1  +1  +1   3
+1 -1   -1  -1   + 1  4
+1  +1  -1  +1  + 1 3

in which the last variable indicate when "-1" occurred for the last time.

I want to creat a syntax file (probably using "vector and loop" command").
Can anyone help me out here?

Thank you very much for your help!

Sungeun


Sungeun Chung, Ph.D.
Assistant Professor
Department of Communication
Sallee Hall 215
1 University Circle
Western Illinois University
Macomb, IL 61455
Tel: [phone]; FAX: [phone]

=====================
To manage your subscription to SPSSX-L, send a message to [hidden email] (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD



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[Garry Gelade]

Here's one way.

Suppose your variables are called v1, v2, v3, v4, v5.  Then:

compute last = 0.
if (v1 =-1) last = 1.
if (v2 =-1) last = 2.
if (v3 =-1) last = 3.
if (v4 =-1) last = 4.
if (v5 =-1) last = 5.
exe.

Garry Gelade.

-----Original Message-----
From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of
Sungeun Chung
Sent: 11 September 2008 17:21
To: [hidden email]
Subject: Syntax: when did it happend for the last time?

Dear experts.

I have a problem in creating syntax command; please help me. I appreciate
your help.

I have a data set like this:

DATA LIST FREE/ var1 var2 var3 var4 var5.
BEGIN DATA
+1  -1 +1  +1 +1
+1  -1  -1  +1  +1
+1 -1   -1  -1   + 1
+1  +1  -1  +1  + 1
END DATA.


For all variables, +1 indicate no change, - 1 indicates change.
For each case, I want to know when "-1" (change) happend for the last time.

For example, I expect

+1  -1 +1  +1 +1   2
+1  -1  -1  +1  +1   3
+1 -1   -1  -1   + 1  4
+1  +1  -1  +1  + 1 3

in which the last variable indicate when "-1" occurred for the last time.

I want to creat a syntax file (probably using "vector and loop" command").
Can anyone help me out here?

Thank you very much for your help!

Sungeun


Sungeun Chung, Ph.D.
Assistant Professor
Department of Communication
Sallee Hall 215
1 University Circle
Western Illinois University
Macomb, IL 61455
Tel: [phone]; FAX: [phone]

=====================
To manage your subscription to SPSSX-L, send a message to
[hidden email] (not to SPSSX-L), with no body text except the
command. To leave the list, send the command SIGNOFF SPSSX-L For a list of
commands to manage subscriptions, send the command INFO REFCARD

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[hidden email] (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
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For a list of commands to manage subscriptions, send the command
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