advertisement

EXAMPLE A5 SAS Program data four; input x1-x3; x3= 3*x3-x1**2; x4=sqrt(x2); drop x1 x2; datalines; 3 4 5 -2 9 3 . 16 8 -3 1 4 ; run; proc print data=four; title 'Flow of operations in a data step'; run; SAS Log 1 2 3 4 5 6 7 options ls=80 nodate pageno=1; data four; input x1-x3; x3= 3*x3-x1**2; x4=sqrt(x2); drop x1 x2; datalines; NOTE: Missing values were generated as a result of performing an operation on missing values. Each place is given by: (Number of times) at (Line):(Column). 1 at 4:9 1 at 4:12 NOTE: The data set WORK.FOUR has 4 observations and 2 variables. NOTE: DATA statement used (Total process time): real time 0.13 seconds cpu time 0.02 seconds 12 13 14 15 16 ; run; proc print data=four; title 'Flow of operations in a data step'; run; NOTE: There were 4 observations read from the data set WORK.FOUR. NOTE: PROCEDURE PRINT used (Total process time): real time 0.08 seconds cpu time 0.01 seconds SAS Output Flow of operations in a data step Obs 1 2 3 4 x3 x4 6 5 . 3 2 3 4 1 1