ggcluster

This is a set of tools for creating cluster plots, tree plots and dendrograms in [R]

It supports functions to plot the results of:

• tree()
• hclust()
• dendrogram()
• kmeans()

Important functions

ggcluster offers a generic function to extract data and text from the various clustering models:

• cluster_data() extracts cluster information from the model object, e.g. cluster allocation, line segment data or label data.

The results of these functions can then be passed to ggplot() for plotting.

For example:

hc <- hclust(dist(USArrests), "ave")
hcdata <- cluster_data(hc, type="rectangle")
p <- ggplot() + 
		geom_segment(data=hcdata$segments, aes(x=x0, y=y0, xend=x1, yend=y1)) +
		geom_text(data=hcdata$labels, aes(x=x, y=y, label=text)) +
		coord_flip() + scale_y_reverse(expand=c(0.2, 0))
print(p)