Weekly Sum/Aggregate: Week begins on a Tuesday

[cara_catus]

Hi,

I'm new to SAS programing so any assistance will be great. 

I have a data set which contains daily (day var) revenue, visit and order participation websites. It looks something like this:  

web_Id	Start_Date	End_Date	Day	Revenue_Participation	Visits	Orders_Participation	Units_Participation
1766618	2-Jun-15	13-Jul-15	2-Jun-15	0	322	11	55
1766618	2-Jun-15	13-Jul-15	3-Jun-15	959	283	17	90
1766618	2-Jun-15	13-Jul-15	4-Jun-15	0	266	15	66
1766618	2-Jun-15	13-Jul-15	5-Jun-15	0	268	13	37
1766618	2-Jun-15	13-Jul-15	6-Jun-15	0	259	7	46
1766618	2-Jun-15	13-Jul-15	7-Jun-15	454	300	13	72
1766618	2-Jun-15	13-Jul-15	8-Jun-15	0	390	14	58
1766618	2-Jun-15	13-Jul-15	9-Jun-15	0	352	21	65
1766618	2-Jun-15	13-Jul-15	10-Jun-15	0	304	17	63
1766618	2-Jun-15	13-Jul-15	11-Jun-15	0	304	10	54
1766618	2-Jun-15	13-Jul-15	12-Jun-15	66	291	16	84
1766618	2-Jun-15	13-Jul-15	13-Jun-15	0	233	8	39
1766618	2-Jun-15	13-Jul-15	14-Jun-15	0	338	18	70
1895471	17-Mar-15	4-May-15	17-Mar-15	0	106	0	0
1895471	17-Mar-15	4-May-15	17-Mar-15	0	834	16	52
1895471	17-Mar-15	4-May-15	18-Mar-15	0	96	0	0
1895471	17-Mar-15	4-May-15	18-Mar-15	858	812	9	17
1895471	17-Mar-15	4-May-15	19-Mar-15	0	89	0	0
1895471	17-Mar-15	4-May-15	19-Mar-15	0	726	4	13
1895471	17-Mar-15	4-May-15	20-Mar-15	0	655	14	59
1895471	17-Mar-15	4-May-15	20-Mar-15	200	71	1	1
1895471	17-Mar-15	4-May-15	21-Mar-15	0	83	0	0
1895471	17-Mar-15	4-May-15	21-Mar-15	0	703	11	32
1895471	17-Mar-15	4-May-15	22-Mar-15	0	111	0	0
1895471	17-Mar-15	4-May-15	22-Mar-15	0	768	13	36
1895471	17-Mar-15	4-May-15	23-Mar-15	169	117	1	2
1895471	17-Mar-15	4-May-15	23-Mar-15	657	701	4	11
1895471	17-Mar-15	4-May-15	24-Mar-15	0	88	0	0
1895471	17-Mar-15	4-May-15	24-Mar-15	0	639	8	33

What I need to do is sum the totals for Revenue_Participation,  Visits , Orders_Participation and Units_Participation by week for each website (web_Id) during the specified campaign date range - between Start_date and end_date based off the day var.

I’d have a var call Week in the datset. The tricky part is the week does not begin on a Sunday or Monday, it begins on a tuesday and ends on monday.  I'm looking for an ouput which looks like this (the counts don't match to the above): 

web_Id	Week(starts on Tuesday)	Start_Date	End_Date	Revenue_Participation	Visits	Orders_Participation	Units_Participation
1766618	6/9/2015	2-Jun-15	13-Jul-15	0	545	89	888
1766618	6/16/2015	2-Jun-15	13-Jul-15	55	653	65	363
1766618	6/23/2015	2-Jun-15	13-Jul-15	99	888	6658	783

 I have been experimenting with code like this.

data week;

set have;

week_of=intnx('week',day,0,'B');

format week_of date9.; run;

Any help will be  appreciated. Thanks! 

[Reeza]

week_of=intnx('week',day,0,'B');

Above generates a Sunday, adding 2 will give you Tuesday.

week_of=intnx('week',day,0,'B') + 2;