Principal component analysis: Some few tool to analyze the specific impact of each feature, and their impact on the label. The tool is applied to a dataset of flowers, where we try to classify which features of the plant correspond to the specific flower. We have four features sepal width, sepal length, petal width, and petal length. All are in cm. The labels or the flowers we are trying to classify are Iris Setosa (label = 0), Iris Versicolour (label = 1), Iris Virginica (label = 2)