We can visualize the hierarchical cluster generated using the plot
function. To this function, we will pass the output of the hclust
function and a few other graphical parameters related to the plotting. Let's see how the plot would look:
plot(cluster, cex=0.5, cex.lab=1, cex.axis=1, cex.main=1, cex.sub=1, which.plots=2)
The output is as follows:
We can further divide the hierarchical cluster into different groups using the rect.hclust
function. To this function, we pass the hierarchical cluster
output, number of groups to be formed, and the border
color to partition the output as parameters:
rect.hclust(cluster, k=5, border="red")
The output is as follows: