suppose to have the following:
Value1 1 1 2 2 2
How can I say/indicate: the last 1 before 2 and the first 2 after the last 1? Thank you in advance
You can use FIRST. to find the first value in a group and LAST. to find the last value in a group. Example:
data want; set have; by value; if last.value then do; ...; end; if first.value then do; ...; end; run;
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