Creating One Observation per Header Record
Overview
In
the previous example, you learned how to create one observation per
detail record. But suppose you only want to know how many people
reside at each address. You can create a data set that reads each
detail record, counts the number of people, and stores this number
in a summary variable.
In
the example below, this summary variable, Total, is computed for
each address. As you can see, creating one observation per header
record condenses a large amount of information into a concise data
set.
As you write the DATA step to read this file, you need to think about performing several tasks. ...
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