COMPUTE ID=$CASENUM .
SAVE OUTFILE 'c:\BOOTDATA.SAV'.
execute.


INPUT PROGRAM .
LOOP SAMP=1 to 1000.
LOOP V = 1 to 20.
COMPUTE ID=TRUNC(UNIFORM(20)) + 1.
END CASE.
LEAVE SAMP.
END LOOP.
END LOOP.
END FILE.
END INPUT PROGRAM .
SORT CASES BY ID .
MATCH FILES / FILE * / TABLE 'c:\BOOTDATA.SAV' / BY ID .
SORT CASES BY SAMP.
SPLIT FILE BY SAMP.