Date: Thu, 24 May 2001 17:15:56 -0700
Reply-To: Dale McLerran <dmclerra@MY-DEJA.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Dale McLerran <dmclerra@MY-DEJA.COM>
Subject: Re: I wish I had paid attention in Fortran class...
Content-Type: text/plain
Todd,
The solution for your problem is simpler than a do loop. All that
you need is to check the condition INT. If INT=0 then you start a
new day. To do that, you just need the following code
day + (int=0);
That's all there is to it. The variable day gets incremented whenever
the condition (int=0) is true, or whenever INT=0. Also, when we use
the above construction "day + ..." without specifying an equals sign,
the variable day is retained from one record to the next.
Dale
>Date: Thu, 24 May 2001 18:35:02 -0400
>Reply-To: "Todd, Mike" <todd@PSYCHIATRY.UCHC.EDU>
>From: "Todd, Mike" <todd@PSYCHIATRY.UCHC.EDU>
>SUBJECTTo: SAS-L@LISTSERV.UGA.EDU
>
>Hi all:
>
>I have a basic programming question that I'm hoping someone can help me
>with.
>
>I have a rather large data set that I need to add a variable to. The data
>file has a variable called INT that has values corresponding to different
>times of day. Each day begins when INT = 0. What I would like to to is
>create a "DAY" variable that assigns a value of 1 to INT for all of the
>1st-day observations, a value of 2 for all of the 2nd-day observations, and
>so on to the end of the file.
>
>The first 3 columns (TIME, SI, INT) in the text below my signature are data
>from the data set, while DAY is the variable I would like to create.
>
>I have the feeling there is some simple do loop solution that I just can't
>think of. Any help would be appreciated. Thanks!
>
>-mike
>
>Michael Todd, Ph.D.
>University of Connecticut Health Center
>Alcohol Research Center-MC2103
>Department of Psychiatry
>263 Farmington Avenue
>Farmington CT 06030-2103
>
>Voice: 860.679.5468
>Fax: 860.679.5464
>E-mail: todd@psychiatry.uchc.edu
>
>
> TIME SI INT DAY
> 5:45:00 23.00 .00 1
>10:11:00 24.00 1.00 1
>16:07:00 25.00 2.00 1
>16:13:00 25.00 2.00 1
>18:02:00 26.00 3.00 1
>19:58:00 27.00 3.00 1
>20:38:00 28.00 3.00 1
> 5:46:00 29.00 .00 2
>10:41:00 1.00 1.00 2
>16:02:00 2.00 2.00 2
>16:03:00 .00 3.00 2
>16:03:00 2.00 3.00 2
>18:07:00 1.00 4.00 2
>20:14:00 . 4.00 2
>20:56:00 . 4.00 2
>21:06:00 . 4.00 2
>21:45:00 8.00 4.00 2
>22:36:00 9.00 4.00 2
>23:09:00 10.00 4.00 2
> 6:46:00 11.00 .00 3
>11:49:00 12.00 1.00 3
>15:16:00 13.00 2.00 3
---------------------------------------
Dale McLerran
Fred Hutchinson Cancer Research Center
mailto: dmclerra@fhcrc.org
Ph: (206) 667-2926
Fax: (206) 667-5977
---------------------------------------
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