rename columns in r data frame code example

Example 1: how to change column names in r

colnames(dataset) <- c('name1','name2',..)

Example 2: rename column in r

my_data %>% 
  rename(
    sepal_length = Sepal.Length,
    sepal_width = Sepal.Width
    )

Example 3: r: rename a column

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