Copy value and variable labels to (subsetted) data frames

Description

Subsetting-functions usually drop value and variable labels from subsetted data frames (if the original data frame has value and variable label attributes). This function copies these value and variable labels back to subsetted data frames that have been subsetted, for instance, with subset.

Usage

copy_labels(df_new, df_origin = NULL)

Arguments

Value

Returns df_new with either removed value and variable label attributes (if df_origin = NULL) or with copied value and variable label attributes (if df_origin was the original subsetted data frame).

Note

In case df_origin = NULL, all possible label attributes from df_new are removed.

Examples

data(efc)
efc.sub <- subset(efc, subset = e16sex == 1, select = c(4:8))
str(efc.sub)

efc.sub <- copy_labels(efc.sub, efc)
str(efc.sub)

efc.sub <- copy_labels(efc.sub)
str(efc.sub)