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Copy Variable Labels and Attributes Across Data Frames

Source: R/label_helpers.R
copy_var_labels.Rd

Transfers column-level attributes (such as `label`, `labels`, and `format.sas`) from a source data frame (`from`) to matching columns in a target data frame (`to`).

Usage

copy_var_labels(from, to, attrs = c("label", "labels", "format.sas"))

Arguments

from

Source data frame containing labelled variables.

to

Target data frame to receive variable attributes.

attrs

Character vector of attribute names to copy (default `c("label", "labels", "format.sas")`).

Value

Target data frame `to` with transferred attributes.

Examples

df1 <- data.frame(age = 50, bmi = 24.5)
attr(df1$age, "label") <- "Age at Enrollment (years)"
df2 <- data.frame(age = 60, bmi = 28.0)
df2 <- copy_var_labels(df1, df2)
attr(df2$age, "label")
#> [1] "Age at Enrollment (years)"