Date:         Fri, 9 Feb 2001 13:30:08 -0500
Reply-To:     "Shilling, Brian [PRI]" <BShillin@PRIUS.JNJ.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Shilling, Brian [PRI]" <BShillin@PRIUS.JNJ.COM>
Subject:      Re: Frequency by season
Comments: To: "estreltsov@eurocomix.net" <estreltsov@eurocomix.net>
Content-Type: multipart/alternative;

Ed,

Try this.

Set up to variables for each season, one beginning and one end. For this
example, lets use winter.

winstart = 01FEB2000;
winend = 28FEB2001;

then use the INTCK function to figure out the number of days in the season,
like so:

windays = INTCK('days',winstart,winend);

Hope this helps!

Brian

> -----Original Message-----
> From: Eduard Streltsov [SMTP:estreltsov@eurocomix.net]
> Sent: Friday, February 09, 2001 1:15 PM
> To:   SAS-L@LISTSERV.UGA.EDU
> Subject:      Frequency by season
>
> Hi,
>
> I've got a SAS file DATES with a variable DATE which is a SAS date. The
> values of DATE span several years across the observations. I also have
> four seasons defined as:
>
> winter -> 01dec thru feb
> spring -> 01mar thru may
> summer -> 01jun thru aug
> autumn -> 01sep thru nov
>
> What I have to do is print number of dates that fall into each season
> (frequency by season) like this:
>
> winter=123 spring=456 summer=789 autumn=258
>
> If a season has nothing in it, a missing (.) should print. I've come up
> with a pretty ugly pile of if-then-elses. I will appreciate any
> professional, elegant example of how to do it.
>
> Thanks, Ed
>
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