how to change a column name in r code example

Example 1: rename column in r

# df = dataframe
# old.var.name = The name you don't like anymore
# new.var.name = The name you want to get

names(df)[names(df) == 'old.var.name'] <- 'new.var.name'

Example 2: r set dataframe column names

R> colnames(X)[2] <- "superduper"