Hello all,
I'm looking for code so that I can aggregate a variable across observations by group in a cumulative fashion... See below for desired result:
Unitid TimePeriod Variable DesiredVariable
1 1 1 1
1 2 0 1
1 3 0 1
1 4 2 3
1 5 0 3
2 1 0 0
2 2 4 4
2 3 0 4
2 4 1 5
2 5 1 6
If someone could help me out, then you guidance would be greatly appreciated!
Thank you,
Rich
Assuming the data is sorted by UnitId and TimePeriod
UNTESTED CODE
data want; set have; by unitid; if first.unitid then sum=0; sum+variable; run;
@LinusH wrote:
Accumulating data should only be done for reporting purposes.
I have never heard such a rule. And furthermore, it doesn't seem like a rule I would follow anyway. Could you please explain?
Assuming the data is sorted by UnitId and TimePeriod
UNTESTED CODE
data want; set have; by unitid; if first.unitid then sum=0; sum+variable; run;
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