I am trying to find the equivalent of the Stata code "egen group" in SAS. The goal is: I have three variables x, y, and z. I want to create a new variable which will assign a different ordinal number for each combination of values of x, y, and z. How can I do this in SAS?
With hope I understand you correctly, use next code:
proc sort data=have; by x y z; run;
data new;
set have;
by x y z;
retain key;
if first.z then key+1;
run;
With hope I understand you correctly, use next code:
proc sort data=have; by x y z; run;
data new;
set have;
by x y z;
retain key;
if first.z then key+1;
run;
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