## ----message = FALSE----------------------------------------------------------
library(ggplot2)
library(treemapify)
G20

## ----basic_treemap------------------------------------------------------------
ggplot(G20, aes(area = gdp_mil_usd, fill = hdi)) +
  geom_treemap()

## ----geom_treemap_text--------------------------------------------------------
ggplot(G20, aes(area = gdp_mil_usd, fill = hdi, label = country)) +
  geom_treemap() +
  geom_treemap_text(fontface = "italic", colour = "white", place = "centre",
                    grow = TRUE)

## ----subgrouped_treemap-------------------------------------------------------
ggplot(G20, aes(area = gdp_mil_usd, fill = hdi, label = country,
                subgroup = region)) +
  geom_treemap() +
  geom_treemap_subgroup_border() +
  geom_treemap_subgroup_text(place = "centre", grow = T, alpha = 0.5, colour =
                             "black", fontface = "italic", min.size = 0) +
  geom_treemap_text(colour = "white", place = "topleft", reflow = T)

## ----many_subgroups-----------------------------------------------------------
ggplot(G20, aes(area = 1, label = country, subgroup = hemisphere,
                subgroup2 = region, subgroup3 = econ_classification)) +
  geom_treemap() +
  geom_treemap_subgroup3_border(colour = "blue", size = 1) +
  geom_treemap_subgroup2_border(colour = "white", size = 3) +
  geom_treemap_subgroup_border(colour = "red", size = 5) +
  geom_treemap_subgroup_text(
    place = "middle",
    colour = "red",
    alpha = 0.5,
    grow = T
  ) +
  geom_treemap_subgroup2_text(
    colour = "white",
    alpha = 0.5,
    fontface = "italic"
  ) +
  geom_treemap_subgroup3_text(place = "top", colour = "blue", alpha = 0.5) +
  geom_treemap_text(colour = "white", place = "middle", reflow = T)