We get an initial understanding of the iris data set with simple functions. In this dataset, we have five variables Sepal.Length, Sepal.Width, Petal.Length, Petal.Width, and Species. We have three types of iris species setosa, versicolor, and virginica that need to be identified by length and width of sepals and petals:
- Load the iris object from the datasets package and get initial insight using the str, summary, and pairs functions:
data (iris) str (iris) ## 'data.frame': 150 obs. of 5 variables: ## $ Sepal.Length: num 5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ... ## $ Sepal.Width : num 3.5 3 3.2 3.1 3.6 3.9 3.4 3.4 2.9 3.1 ... ## $ Petal.Length: num 1.4 1.4 1.3 1.5 1.4 1.7 1.4 1.5 1.4 1.5 ... ## $ Petal.Width : num 0.2 0.2 ...
