Handbook of SAS DATA Step Programming

36 Handbook of SAS

®

DATA Step Programming

In Program 3.8, immediately after the SET statement, the TIME variable is set

to 1. Next, the value from S1 is assigned to the SCORE variable. Now all the

elements for the rst observation in the LONG data set are ready for output-

ting. Before outputting, check whether the SCORE value is missing ornot; if

it is not missing, use the explicit OUTPUT statement to create therst obser-

vation for the LONG data set. Next, assign value 2 to the TIME variable and

assign the value from S2 to SCORE and output the data set again. Similar

processes are repeated; assign 3 to TIME, assign S3 to SCORE, and then ou ...