R语言ggplot2可视化：为层次聚类树状图dendrogram中的簇进行着色在树状图dendrogram中为不同的层次聚类簇配置不同的色彩

Posted 2022-01-01 Data+Science+Insight

R语言ggplot2可视化：为层次聚类树状图dendrogram中的簇进行着色、在树状图dendrogram中为不同的层次聚类簇配置不同的色彩

#层次聚类树状图dendrogram

labs = paste("sta_",1:50,sep="") #new labels
rownames(USArrests)<-labs #set new row names
hc <- hclust(dist(USArrests), "ave")

library(ggplot2)
library(ggdendro)

#convert cluster object to use with ggplot
dendr <- dendro_data(hc, type="rectangle") 

#your own labels are supplied in geom_text() and label=label
ggplot() + 
  geom_segment(data=segment(dendr), aes(x=x, y=y, xend=xend, yend=yend)) + 
  geom_text(data=label(dendr), aes(x=x, y=y, label=label, hjust=0), size=3) +
  coord_flip() + scale_y_reverse(expand=c(0.2, 0)) + 
  theme(axis.line.y=element_blank(),
        axis.ticks.y=element_blank(),
        axis.text.y=element_blank(),
        axis.title.y=element_blank(),
        panel.background=