collapse_labels {dendextend} | R Documentation |
Given a dendrogram object, and a set of labels that are in the same sub-dendrogram, the function performs a recursive DFS algorithm to determine the sub-dendrogram which is composed of (exactly) all 'selected_labels'. It then squashes this sub-dendrogram, and returns the original dendrogram with the squashed dendrogram with it.
collapse_labels(dend, selected_labels, ...)
dend |
a dendrogram object |
selected_labels |
A character vector with the labels we expect to have in the sub-dendrogram. This doesn't have to be in the same order as in the dendrogram. |
... |
elipsis (passed to squash_dendrogram) |
Either the original dend. Or, if the labels properly are in the dend by each other, a dend with a squashed sub-dendrogram inside it.
library("dendextend") set.seed(23235) ss <- sample(1:150, 5) # Getting the dend object dend25 <- iris[ss, -5] %>% dist() %>% hclust() %>% as.dendrogram() %>% set("labels", letters[1:5]) par(mfrow = c(1,4)) plot(dend25) plot(collapse_labels(dend25, c("d", "e"))) plot(collapse_labels(dend25, c("c", "d", "e"))) plot(collapse_labels(dend25, c("c", "d", "e"), squashed_original_height=TRUE))