Number of PCs using scree plot
Now you will implement the elbow method relating to the change in the relative importance of the variance to choose the number of components. We will use the pca.state object containing the PCs of the state.x77 to implement this method.
Cet exercice fait partie du cours
Multivariate Probability Distributions in R
Instructions
- Use the
screeplot()function to plot the relative importance of the variance explained by the eight PC's of thestate.x77dataset.
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Draw screeplot
screeplot(___, type = "l")
grid()