The help page for iris (type help(iris)) gives code that converts the data in iris3 (datasets package) to case-by-variable format, with column names “Sepal.Length”, “Sepal.Width”, “Petal.Length”,...

The help page for iris (type help(iris)) gives code that converts the data in iris3 (datasets package) to case-by-variable format, with column names “Sepal.Length”, “Sepal.Width”, “Petal.Length”, “Petal.Width”, and “Species”. Look up the help pages for the functions that are used, and make sure that you understand them. Then add annotation to this code that explains each step in the computation.