How do I identify dates that fall in the last week of the month?
How do I identify dates that fall in the last week of the month? DATA dates; INPUT startdt :mmddyy10.; FORMAT startdt mmddyy10.; DATALINES; 12/01/2000 09/30/2012 06/01/2001 09/01/2001 09/30/2018 09/30/2018 04/30/2017 ; RUN;
DATA dates;
INPUT startdt :mmddyy10.;
first=nwkdom(5,2,month(startdt),year(startdt));
in_last_week=(startdt>=first);
FORMAT first startdt mmddyy10.;
DATALINES;
12/01/2000
09/30/2012
06/01/2001
09/01/2001
09/30/2018
09/30/2018
04/30/2017
;
RUN;
Please let us know how you define "week". Does it start on Saturday, or Sunday, or Monday? Or do you mean last 7 days? Or do you mean something else?
Please be specific and detailed.
If you mean the last 7 days of the month, here's a way:
data want;
set have;
if (intnx('month', startdt, 1) -7) <= startdt < intnx('month', startdt, 1);
run;
Assuming last 7 days.
data want;
set dates;
in_last_7days = startdt >= intnx('month', startdt, 0, 'e') - 7;
run;
DATA dates;
INPUT startdt :mmddyy10.;
first=nwkdom(5,2,month(startdt),year(startdt));
in_last_week=(startdt>=first);
FORMAT first startdt mmddyy10.;
DATALINES;
12/01/2000
09/30/2012
06/01/2001
09/01/2001
09/30/2018
09/30/2018
04/30/2017
;
RUN;
Thanks you so much @Ksharp Ksharp. This is exactly what I was looking for. To be able to identify the start date of the last week of the month. I wasn't aware of the NWKDOM function. Than you for bringing it to our attention!!!
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.