pattern | R Documentation |
The pattern attribute contains information about the separator character used to name sub-questions in the data. Survey software typically makes use of underscores to distinguish sub-questions in a grid of questions, e.g. "Q4_1", "Q4_2", "Q4_3", "Q4_other". The function pattern()
returns the pattern
attribute, and pattern<- updates the attribute.
pattern(x) pattern(x) <- value
x |
surveydata object |
value |
New value |
as.surveydata()
, which.q()
Other Attribute functions:
varlabels()
# Extract the pattern from membersurvey oldptn <- pattern(membersurvey) oldptn # The pattern is used to extract columns names(membersurvey) grep("Q20", names(membersurvey), value=TRUE) head(membersurvey["Q20"]) head(membersurvey["Q20_other"]) # Define a new pattern pattern(membersurvey) <- list(sep="_", exclude="") head(membersurvey["Q20"]) # Reset original pattern pattern(membersurvey) <- oldptn rm(oldptn)
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