= SPSS Do Repeat =

The '''`DO REPEAT`''' command loops a finite number of times. See [[SPSS/Looping|here]] for options and alternatives.

<<TableOfContents>>

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== Usage ==

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

Each loop expansion list must be of the same length.

The dummy variable name must follow normal rules for variable names. It is allowed to temporarily shadow a pre-existing variable's name.

Substitutions are only made on unquoted words, i.e. `BAR` does not have the `A` substituted by the loop expansion.

A variable list can be specified with all pre-existing variables, or all new variables. The two cannot be mixed. For new variable lists, a range is extrapolated from the names. New variables are ''not'' created by the `DO REPEAT` command.



=== Limitations ===

Only the following commands are valid in a `DO REPEAT` structure.

 * [[SPSS/Loop#Break|BREAK]]
 * [[SPSS/Compute|COMPUTE]]
 * [[SPSS/Count|COUNT]]
 * [[SPSS/DataList|DATA LIST]]
 * [[SPSS/Logic#Conditional_Processing|DO IF]]
 * [[SPSS/Formats|FORMATS]]
 * [[SPSS/If|IF]]
 * [[SPSS/Leave|LEAVE]]
 * [[SPSS/Loop|LOOP]]
 * [[SPSS/MissingValues|MISSING VALUES]]
 * [[SPSS/Numeric|NUMERIC]]
 * [[SPSS/Print|PRINT]]
 * [[SPSS/Recode|RECODE]]
 * [[SPSS/Select|SELECT]]
 * [[SPSS/String|STRING]]
 * [[SPSS/Vectors|VECTOR]]
 * [[SPSS/Write|WRITE]]

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== Data Model ==

The `DO REPEAT` command is queued as a pending transformation.

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== See also ==

[[https://www.gnu.org/software/pspp/manual/html_node/DO-REPEAT.html|PSPP manual for DO REPEAT]]



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