Assign Labels to Data Frame Variables in R (Example Code)

data(iris)                                        # Loading example data set
head(iris)
#   Sepal.Length Sepal.Width Petal.Length Petal.Width Species
# 1          5.1         3.5          1.4         0.2  setosa
# 2          4.9         3.0          1.4         0.2  setosa
# 3          4.7         3.2          1.3         0.2  setosa
# 4          4.6         3.1          1.5         0.2  setosa
# 5          5.0         3.6          1.4         0.2  setosa
# 6          5.4         3.9          1.7         0.4  setosa

data(iris) # Loading example data set head(iris) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa

labs <- c(Sepal.Length = "1st variable label",    # Define labels
          Sepal.Width = "2nd variable label",
          Petal.Length = "3rd variable label",
          Petal.Width = "4th variable label",
          Species = "5th variable label")

labs <- c(Sepal.Length = "1st variable label", # Define labels Sepal.Width = "2nd variable label", Petal.Length = "3rd variable label", Petal.Width = "4th variable label", Species = "5th variable label")

install.packages("Hmisc")                         # Install Hmisc package
library("Hmisc")                                  # Load Hmisc

install.packages("Hmisc") # Install Hmisc package library("Hmisc") # Load Hmisc

label(iris) <- as.list(labs[match(names(iris),    # Add variable labels
                                  names(labs))])

label(iris) <- as.list(labs[match(names(iris), # Add variable labels names(labs))])

label(iris)                                       # Print variable labels
#         Sepal.Length          Sepal.Width         Petal.Length          Petal.Width              Species 
# "1st variable label" "2nd variable label" "3rd variable label" "4th variable label" "5th variable label"

label(iris) # Print variable labels # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # "1st variable label" "2nd variable label" "3rd variable label" "4th variable label" "5th variable label"