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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     [Solved]Convert dates to week

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[Solved]Convert dates to week
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JOE
Platinum Member
posted
Hi,

I'm trying to group my dates to weeks. It's grouping them starting with Mon instead of Sun? Data does not calulate correctly either.

Here's what I'm using:

NEWDATE/MDYY=HDATE(ReportDate, 'MDYY');
WDATE/MDYY=DATEMOV(NEWDATE, 'BOW');


Am I missing something? Thanks for any help you can provide.

Joe

This message has been edited. Last edited by: JOE,


WebFocus 7.7.02 WinXP
 
Posts: 236 | Registered: May 12, 2006Report This Post
Prarie
Virtuoso
posted Hide Post
Joe do a search on the WEEKFIRST function.
 
Posts: 1903 | Location: San Antonio | Registered: February 28, 2005Report This Post
JOE
Platinum Member
posted Hide Post
Thanks for the Tip! I will.


WebFocus 7.7.02 WinXP
 
Posts: 236 | Registered: May 12, 2006Report This Post
<JJI>
posted
Joe,

Some time ago I wrote a define function that calculates the week number. The calculation is based on an algorithm I found in Wikipedia
 
DEFINE FUNCTION WEEKNR ( DATUM/DMYY)
DATE_I8YYMD/I8YYMD       = DATECVT(DATUM, 'DMYY', 'I8YYMD');
DAY_OF_WEEK/A4           = DOWK(DATE_I8YYMD, 'A4') ;
WEEKDAYNR/I1             = DECODE DAY_OF_WEEK ( MON 1 TUE 2 WED 3 THU 4 FRI 5 SAT 6 SUN 7 ELSE 9 ) ; 
WEEKTHURSDAY/DMYY        = DATUM + 4 - WEEKDAYNR ;
WEEKYEAR/YY              = WEEKTHURSDAY;
FDAYOFYEAR/A8DMYY        = '0101' || EDIT(WEEKYEAR) ;
FIRSTDAYOFYEAR/DMYY      = FDAYOFYEAR ;
WEEKNR/I2                = ((DATEDIF(FIRSTDAYOFYEAR,WEEKTHURSDAY,'D')) / 7) + 1;
END


Hope this helps.
 
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JOE
Platinum Member
posted Hide Post
Thanks! I took pieces of each and was able to fix my issue..Thanks!


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