# processLSvarLabels

0th

Percentile

This function is meant to quickly parse the variable labels set by LimeSurvey. It works particularly well with dual anchor array questions, where the left and right anchors as well as the subquestions are extracted automatically.

Keywords
utilities
##### Usage
processLSvarLabels(dat,
varnameRegExPairs = NULL,
labelExtractionRegExPair = c("\$(.*)\$.*", "\\1"),
lengthToWrap = 50,
lengthToWrapAnchors = 20,
leftAnchorRegExPairs = list(c(".*[[:graph:]]([A-Z][a-z][^|]*)\\|(.+)",
"\\1")),
rightAnchorRegExPairs = list(c(".*[[:graph:]]([A-Z][a-z][^|]*)\\|(.+)",
"\\2")))
##### Arguments
dat
The dataframe as produced by importLimeSurveyData.
varnameRegExPairs
Pairs of regular expressions to replace in the variable names. This is useful when some pattern can be applied to the variable names to, for example, add underscores te denote different parts of the variable name. This has to be a list of character vectors that each have length 2.
labelExtractionRegExPair
The regular expression pair used to extract the labels.
lengthToWrap
At how many characters to wrap the subquestions.
lengthToWrapAnchors
At how many characters to wrap the anchors.
leftAnchorRegExPairs
The regular expression pairs to use to extract the left anchors.
rightAnchorRegExPairs
The regular expression pairs to use to extract the right anchors.
##### Details

This function processes LimeSurvey variable labels and applies regular expressions to automatically extract subquestions and left and right anchors.

##### Value

A dataframe that can conveniently be used with detStructAddVarLabels.

(Forthcoming)