Dendrograms

[teunbrand]

This PR aims to fix #33.

Examples of usage:

devtools::load_all("~/packages/legendry/")
#> ℹ Loading legendry
#> Loading required package: ggplot2
clust <- hclust(dist(scale(USArrests)), "ave")
var_clust <- hclust(dist(scale(t(USArrests))), "ave")

long_arrests <- data.frame(
  state = rownames(USArrests)[row(USArrests)],
  variable = colnames(USArrests)[col(USArrests)],
  value = as.vector(scale(USArrests))
)

ggplot(long_arrests, aes(variable, state, fill = value)) +
  geom_tile() +
  scale_y_dendro(clust) +
  scale_x_dendro(var_clust) +
  guides(
    x = "axis",
    x.sec = primitive_segments(key = "dendro")
  )

^{Created on 2024-12-08 with reprex v2.1.1}