SPSS® 12.0 Command Syntax Reference

510 END CASE
Example
• COMPUTE sets X equal to each of the scratch variables. END CASE tells the program to
build a case. Thus, the first loop (for the first case) sets X equal to the first element of vector
V. Since V(1) references #X1, and #X1 is 2, the value of X is 2. Variable X is then formatted
and printed before control returns to the command END LOOP. The loop
continues, since indexing is not complete. Thus, the program then sets X to #X2, which is
1, builds the second case, and passes it to the FORMAT and PRINT commands. After the
third iteration, which sets X equal to 1, the program formats and prints the case and terminates
the loop. Since the end of the file has not been encountered, END INPUT
PROGRAM passes control to the first command in the input program, DATA LIST, to read
the next input case. After the second loop, however, the program encounters END DATA
and completes building the working data file.
• The six new cases are shown in Figure 1.
Figure 1 Outcome for multiple cases read from a single case
2
1
1
3
5
1
*Restructuring a data file to create a separate case for
each book order.
INPUT PROGRAM.
DATA LIST /ORDER 1-4 #X1 TO #X22 (1X,11(F3.0,F2.0,1X)).
LEAVE ORDER.
VECTOR BOOKS=#X1 TO #X22.
LOOP #I=1 TO 21 BY 2 IF NOT SYSMIS(BOOKS(#I)).
- COMPUTE ISBN=BOOKS(#I).
- COMPUTE QUANTITY=BOOKS(#I+1).
- END CASE.
END LOOP.
END INPUT PROGRAM.
BEGIN DATA
1045 182 2 155 1 134 1 153 5
1046 155 3 153 5 163 1
1047 161 5 182 2 163 4 186 6
1048 186 2
1049 155 2 163 2 153 2 074 1 161 1
END DATA.
SORT CASES ISBN.
DO IF $CASENUM EQ 1.
- PRINT EJECT /’Order ISBN Quantity’.
- PRINT SPACE.
END IF.
FORMATS ISBN (F3)/ QUANTITY (F2).
PRINT /’ ’ ORDER ’ ’ ISBN ’ ’ QUANTITY.
EXECUTE.