Hello, I have a dataset that lists dates, and the corresponding YYMMM (for example September 2021 is 21M09).
I would like to take the interval of 21M02 to 23M09 and assign the values 1 through 32 to these in order.
Using a macro is preferable in case I need to change this interval. Any suggestions? Thanks!!
Hi there are multiple rows that i would like to assign the value of 1,2, etc. depending on the value of YYMMM.
If you want to assign 1,2,3 just use a retained variable.
data want; set have; by id; seq+1; if first.id then seq=1; run;
If you want to convert MONTH into relative month number then use INTCK() function. Add one if you want to number from 1 instead of from 0.
If they are not already dates that just have the YYMM5. format attached (who displays dates without the century number?).
%let basedate = '01jan2011'd; data want; set have; month_number = 1 + intck('month',&basedate,yymmm); run;
If they are strings then first convert them into a date value.
%let basedate = '01jan2011'd; data want; set have; month_number = 1 + intck('month',&basedate,input(cats(compress(yymmm,'Mm'),'01'),yymmdd.)); run;
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