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.
Questo esercizio fa parte del corso
Multivariate Probability Distributions in R
Istruzioni dell'esercizio
- Use the
screeplot()function to plot the relative importance of the variance explained by the eight PC's of thestate.x77dataset.
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
# Draw screeplot
screeplot(___, type = "l")
grid()