SPSS® 12.0 Command Syntax Reference

500 DO IF
Example
INPUT PROGRAM.
DATA LIST FILE=CARPARTS /PARTNO 1-2 KIND 10-14 (A).
DO IF (PARTNO EQ 11 AND KIND EQ ’FORD’).
+ REREAD.
+ DATA LIST /PRICE 3-6 (2) QUANTITY 7-9 BUYER 20-43 (A).
+ END CASE.
ELSE IF (PARTNO EQ 11 AND (KIND EQ ’CHEVY’ OR KIND EQ ’VW’)).
+ REREAD.
+ DATA LIST /PRICE 15-18 (2) QUANTITY 19-21 BUYER 30-53 (A).
+ END CASE.
END IF.
END INPUT PROGRAM.
PRINT FORMATS PRICE (DOLLAR6.2).
PRINT /PARTNO TO BUYER.
WEIGHT BY QUANTITY.
DESCRIPTIVES PRICE.
• The first DATA LIST extracts the part number and the type of automobile.
• Depending on the information from the first DATA LIST, the records are reread, pulling the
price, quantity, and buyer from different places.
• The two END CASE commands limit the working file to only those cases with Part 11 and
automobile type Ford, Chevrolet, or Volkswagen. Without the END CASE commands,
cases would be created in the working file for other part numbers and automobile types
with missing values for price, quantity, and buyer.
• The results of the PRINT command are shown in Figure 1.
Figure 1 Printed information for part 11
11 FORD $12.95 100 CHAPMAN AUTO SALES
11 FORD $3.95 25 BETTER USED CARS
11 CHEVY $1.95 5 HUFFMAN SALES & SERVICE
11 VW $5.95 20 MIDWEST VOLKSWAGEN SALES
11 CHEVY $2.95 15 SAM’S AUTO REPAIR