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Date:         Mon, 19 Sep 2005 15:36:28 -0400
Reply-To:     Richard Ristow <wrristow@mindspring.com>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Richard Ristow <wrristow@mindspring.com>
Subject:      Re: set a given time to missing
Comments: To: Martin Sherman <MSherman@loyola.edu>
In-Reply-To:  <s32ebe8e.048@GWMAIL01.LOYOLA.EDU>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 01:34 PM 9/19/2005, Martin Sherman wrote:

>Dear list, I have a time variable HH:MM:SS that has a value of >00:00:00 that I want to set to system missing. I tried using the >following but it doesn't work. > >If idnumber eq 90320279 @55ctime_ eq time.hms(.,.).

Two things: . First, "@55ctime_ eq time.hms(.,.)" won't work for ANY variable under ANY circumstances. "EQ" means "test for equality"; "=" means "assign value." So, you'd need to use (I'm adding a pseudo-indent), . If idnumber eq 90320279 @55ctime_ = time.hms(.,.). * ..................................^.......... . Second, a time value is a numeric value, and can be made system-missing in any of the usual ways. In your case, system variable $SYSMIS would work: . If idnumber eq 90320279 @55ctime_ = $SYSMIS. * ..................................^.^^^^^^^

. Third of two things (OK, like the fourth book of the *Hitchiker's Guide* trilogy), see today's posting 'Tracing data corrections, and "data in code"', on managing such sets of corrections.


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