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    15. Getting Your Data into Shape > Renaming Columns in a Data Frame

    Renaming Columns in a Data Frame

    Problem

    You want to rename the columns in a data frame.

    Solution

    Use the names(dat) <- function:

    names(dat) <- c("name1", "name2", "name3")

    Discussion

    If you want to rename the columns by name:

    library(gcookbook) # For the data set
names(anthoming)   # Print the names of the columns

 "angle" "expt"  "ctrl"

names(anthoming)[names(anthoming) == "ctrl"] <- c("Control")
names(anthoming)[names(anthoming) == "expt"] <- c("Experimental")
names(anthoming)

 "angle"        "Experimental" "Control"

    They can also be renamed by numeric position:

    names(anthoming)[1] <- "Angle"
names(anthoming)

 "Angle"        "Experimental" "Control"

      

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