CODEWITHSUNDEEP
loopsspss
jheaton141
jheaton141

Reputation: 57

SPSS Loop: parse n variables for list of values

I want to loop through multiple variables (ie multiple haystacks) using a list of needles.

Data:

PICK1 PICK2 PICK3 PICK4
Grape Raspberry Clementime Strawberry
Strawberry Lemon Blueberry Apple
Cantelope Mango Grape Pear
Apple Orange Kiwi Raspberry

Manual code that works

Compute citrus=0
if char.index(PICK1,"orange")>0 citrus=1.
if char.index(PICK2,"orange")>0 citrus=1.
if char.index(PICK3,"orange")>0 citrus=1.
if char.index(PICK4,"orange")>0 citrus=1.
if char.index(PICK1,"lemon")>0 citrus=1.
if char.index(PICK2,"lemon")>0 citrus=1.
if char.index(PICK3,"lemon")>0 citrus=1.
if char.index(PICK4,"lemon")>0 citrus=1.
if char.index(PICK4,"clementine")>0 citrus=1.
if char.index(PICK4,"clementine")>0 citrus=1.
if char.index(PICK4,"clementine")>0 citrus=1.
if char.index(PICK4,"clementine")>0 citrus=1.

Desired Outcome: log 1 if the values are found within the variables

Citrus
1
1
0
1

Attempted code (not working)

do repeat L = [orange, lemon, clementine]
 /PICK = PICK1 to PICK7000.
compute L = if char.index(PICK,L)>0 citrus=1.
end repeat.

I originally put the char.index to search for multiple values with a similar basename. For example, searching "berry" would desire to find "strawberry", "blueberry", etc. Is there a way to incorporate that into the COMPUTE function?

NUMERIC berry (f1.0).
DO REPEAT  PICK = PICK1 to PICK7000.
COMPUTE berry=any(PICK, char.index(PICK, "berry").
END REPEAT.
EXECUTE.

Upvotes: 2

Views: 124

Answers (1)

horace_vr
horace_vr

Reputation: 3166

The do repeat structure operates with arrays which must be of equal lengths. On top of that, you do not need square brackets, and strings are referenced between quotations signs. Also, not sure if the compute really works like that, mixed with and if transformation.

You want to parse a list of variables, check for 3 strings, and do a transformation if condition is met:

NUMERIC citrus (f1.0).
COMPUTE citrus=0.
DO REPEAT  PICK = PICK1 to PICK7000.
IF any(PICK, "orange", "lemon", "clementine") citrus=1.
END REPEAT.
EXECUTE.

or, a little more synthetic:

NUMERIC citrus (f1.0).
DO REPEAT  PICK = PICK1 to PICK7000.
COMPUTE citrus=any(PICK, "orange", "lemon", "clementine").
END REPEAT.
EXECUTE.

or, if you want to also look at any "berries":

NUMERIC citrus (f1.0).
NUMERIC berries (f1.0).
DO REPEAT  PICK = PICK1 to PICK7000.
COMPUTE citrus=any(PICK, "orange", "lemon", "clementine").
COMPUTE berries = CHAR.INDEX(PICK, "berry")>0.
END REPEAT.
EXECUTE.

Upvotes: 2

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