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Assign variable labels to a data.frame from a lookup table.
set_labels(data, names_labels)data frame to be labelled
data frame with column 1 containing variable names from data and column 2 containing variable labels. Other columns will be ignored.
Useful if variable labels have been imported from a data dictionary. The first column in names_labels must contain the variable name and the second column the variable label. The column names are not used.
If no label is provided then the existing label will not be changed. To remove a label set the label to NA.
# create data frame with labels
lbls <- data.frame(c1=c('cohort','size_change'),
c2=c('Cancer cohort','Change in tumour size'))
# set labels and return labelled data frame
set_labels(ctDNA,lbls)
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