# dist.dendlist: Topological Distances Between Two dendrograms In dendextend: Extending 'dendrogram' Functionality in R

 dist.dendlist R Documentation

## Topological Distances Between Two dendrograms

### Description

This function seems to bring different results than ape - checking this out is still an open issue: github issue

This function computes the Robinson-Foulds distance (also known as symmetric difference) between two dendrograms. This is the number of edges (branches) in tree_1 with a combination of labels that exist in it but not in any subtree of tree2, plus the same calculation of tree2 when compared to tree1. This is the sum of length of distinct_edges(x,y) with distinct_edges(y,x).

This function might implement other topological distances in the future.

### Usage

dist.dendlist(dend, method = c("edgeset"), ...)

### Arguments

 dend a dendlist method currently only 'edgeset' is implemented. ... Ignored.

### Value

A dist object with topological distances between all trees

distinct_edges, dist.topo, dist.multiPhylo, treedist,

### Examples

x <- 1:5 %>%
dist() %>%
hclust() %>%
as.dendrogram()
y <- set(x, "labels", 5:1)

dist.dendlist(dendlist(x1 = x, x2 = x, y1 = y))
dend_diff(x, y)

# Larger trees
x <- 1:6 %>%
dist() %>%
hclust() %>%
as.dendrogram()
y <- set(x, "labels", c(1:3, 6, 4, 5))

dend_diff(x, y)
dist.dendlist(dendlist(x, y))
distinct_edges(x, y)
distinct_edges(y, x)
length(distinct_edges(x, y)) + length(distinct_edges(y, x)) # dist.dendlist

dendextend documentation built on March 31, 2023, 10:17 p.m.