how to rename data in r code example

Example 1: rename columns based on a variable in r

df <- rename(df, new_name = old_name) #For renaming dataframe column
 
tbl <- rename(tbl, new_name = old_name) #For renaming tibble column
 
tbl <- tbl %>% rename(new_name = old_name) #For renaming tibble column using dplyrpipe 
                                           #operator

Example 2: r: rename a column

colnames(df)[which(names(df) == "columnName")] <- "newColumnName"