SPSS Looping

SPSS offers a couple options for looping, but overall is less flexible as compared to other languages.

Contents

  1. SPSS Looping
    1. DO REPEAT
    2. Macros

DO REPEAT

One method of printing that is only valid for data transformation commands (i.e. COMPUTE) is the DO REPEAT ... END REPEAT command.

As demonstrated below, DO REPEAT can iterate over...

Multiple sequences/ranges can be iterated over in parallel as long as each has the same number of elements. 

do repeat X=A B C D E / Y=new1 to new5 / Z=1 to 5.
  if (original=Z) Y=ltrim(rtrim(X)).
end repeat.

To print the evaluated loop syntax, use END REPEAT PRINT.

Macros

Advanced looping can be handled through macro programming. See SPSS/Macros#Loops for examples.

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