dendro.R

rm(list = ls())
library("highcharter")
library("ggdendro")
library("dplyr")


x <- iris[, -5] %>% dist %>% hclust %>% as.dendrogram()
x <- mtcars %>% dist %>% hclust %>% as.dendrogram()

hchart(as.dendrogram(hclust(dist(mtcars))))

attr(x, "class") <- "dendrogram"
class(x)
plot(x)
hchart(x)
highcharter:::hchart.dendrogram(x)
hc <- hchart(x)
#' @importFrom ggdendro dendro_data
hchart.dendrogram <- function(x, ...) {
  dddata <- dendro_data(x)  
  
  by_row2 <- function(.d, .f, ...) {
    purrr::by_row(.d, .f, ..., .to = "out")[["out"]]
  }
  
  dsseg <- dddata$segments %>% 
    mutate(x = x - 1, xend = xend - 1) %>% 
    by_row2(function(x){
      list(list(x = x$x, y = x$y), list(x = x$xend, y = x$yend))
    }) 
  
  hc <- highchart() %>% 
    hc_plotOptions(
      series = list(
        lineWidth = 2,
        showInLegend = FALSE,
        marker = list(radius = 0),
        enableMouseTracking = FALSE
      )
    ) %>% 
    hc_xAxis(categories = dddata$labels$label,
             tickmarkPlacement = "on") %>% 
    hc_colors(list(hex_to_rgba("#606060")))
  
  for (i in seq_along(dsseg)) {
    hc <- hc %>% hc_add_series(data = dsseg[[i]], type = "scatter")
  }
  
  hc
}

hc %>%
  hc_chart(type = "column")

hc %>%
  hc_chart(type = "bar") %>% 
  hc_xAxis(tickLength = 0)

hc %>% hc_chart(type = "bar") %>%
  hc_yAxis(reversed = TRUE) %>%
  hc_xAxis(opposite = TRUE, tickLength = 0)

Shc %>% hc_chart(polar = TRUE) %>%
  hc_yAxis(reversed = TRUE, visible = TRUE)  %>% 
  hc_xAxis(gridLineWidth = 0, lineWidth = 0)