Labels in Dendrogram
To add the labels into the dendrogram we will use geom_node_text() which will add the labels into the graph into a hierarchical structure
R
# librarieslibrary(ggraph)library(igraph)library(tidyverse) # create a data frame data <- data.frame( level1="CEO", level2=c( rep("boss1",4), rep("boss2",4)), level3=paste0("mister_", letters[1:8])) # transform it to a edge list!edges_level1_2 <- data %>% select( level1, level2) %>% unique %>% rename( from=level1, to=level2)edges_level2_3 <- data %>% select( level2, level3) %>% unique %>% rename( from=level2, to=level3)edge_list=rbind(edges_level1_2, edges_level2_3) # Now we can plot thatgraph_Data <- graph_from_data_frame( edge_list )ggraph(graph_Data, layout = 'dendrogram') + geom_edge_diagonal() + geom_node_text(aes( label=name)) + theme_void() |
Output:
Plot Dendrogram with R and ggraph
In this article, we are going to see how to customize dendrogram. It is also known as a tree diagram and it is a visual representation of the hierarchical relationship between items. A dendrogram’s main purpose is to figure out the best approach to assign objects to clusters.