Re: getting DO IF command error

[John Darrington]

I think there are two things you need to note:

1. Whenever you assign a variable, you need to use the COMPUTE keyword.  ie: 
COMPUTE x = 3.
   and not simply x = 3 (which pspp will consider to be a boolean expression, 
whose result
   depends on whether x has the value 3).

2. SYSMIS (when used in syntax) is function , not a constant.  However $SYSMIS 
is a constant.

If you look up SYSMIS in the index of the user manual, you should find this 
explained.

So try something like this:

DO IF CoeMis=0 or CoeMis=1 or CoeMis=2.
COMPUTE MeanCoe2 = SUM(OE15, OE16, OE17, OE18, OE19, OE20, OE21)/(7-CoeMis).
ELSE 
COMPUTE MeanCoe2 = $SYSMIS.
END IF.

Alternatively, you could use the RECODE command. 

I hope this helps.


On Mon, Apr 09, 2012 at 03:52:58PM -0700, Jill Covert wrote:
     Hi,
     
     I've tried the following DO IF commands without success (I'm able to run
     the means correctly, but do not get a sysmis for those where CoeMis is > 
2):
     
     DO IF CoeMis=0 or CoeMis=1 or CoeMis=2.
     COMPUTE MeanCoe2 = SUM(OE15, OE16, OE17, OE18, OE19, OE20, 
OE21)/(7-CoeMis).
     ELSE MeanCoe2=sysmis.
     END IF.
     DO IF CoeMis=0 or CoeMis=1 or CoeMis=2.
     COMPUTE MeanCoe2 = SUM(OE15, OE16, OE17, OE18, OE19, OE20, 
OE21)/(7-CoeMis).
     ELSE IF CoeMis>2 MeanCoe2=sysmis.
     END IF.
     
     DO IF CoeMis=0 or CoeMis=1 or CoeMis=2.
     COMPUTE MeanCoe2 = SUM(OE15, OE16, OE17, OE18, OE19, OE20, 
OE21)/(7-CoeMis).
     ELSE CoeMis>2 MeanCoe2=sysmis.
     END IF.
     
     DO IF CoeMis=0 or CoeMis=1 or CoeMis=2.
     COMPUTE MeanCoe2 = SUM(OE15, OE16, OE17, OE18, OE19, OE20, 
OE21)/(7-CoeMis).
     ELSE MeanCoe2 (sysmis).
     END IF.
     
     Error message in Output for the first attempt--others are
     similar--expecting end of command at MeanCoe2:
     DO IF CoeMis = 0 or CoeMis=1 or CoeMis=2.
     COMPUTE  MeanCoe2 = SUM(OE15, OE16, OE17, OE18, OE19, OE20,
     OE21)/(7-CoeMis).
     R:\EVALUA~1\CBOEXC~1\Data\Syntax\TP-OE.sps.6-13: error: ELSE: Syntax error
     at
     `MeanCoe2': expecting end of command.
     ELSE MeanCoe2=sysmis.
     END IF.
     
     I also wasn't able to simply write:
     DO IF CoeMis < 3.
     but at least got it to work writing out each number.
     
     If anyone can point out my error, I would much appreciate it! And if you
     need more info, please let me know.
     
     Thank you!
     Jill
     
     *We know how to organize warfare, but do we know how to act when confronted
     with peace?
     
     *
         -- Jacques-Yves Cousteau (1910-1997)

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