An easier way to create nested, grouped, heirarchical bar charts with ggplot2
devtools::install_github("davedgd/ggNestedBarChart")library(ggNestedBarChart)
library(stringr)
# set up data
data(mtcars)
mtcars <- mtcars %>%
mutate(car = rownames(mtcars),
vs = recode(vs, "0" = "V-Shaped", "1" = "Straight"),
am = recode(am, "0" = "Automatic", "1" = "Manual"),
gear = paste(gear, "Gears"),
carb = paste(carb, "Carbs"),
brand = str_split(rownames(mtcars), " ") %>% map_chr(., 1))
# create base ggplot2 bar chart with theme tweaks
p1 <- ggplot(mtcars, aes(x = brand, fill = carb)) +
geom_bar() +
geom_text(aes(label = ..count..), stat = "count", position = position_stack(0.5), color = "white", fontface = "bold") +
facet_wrap(vars(am, vs, gear), strip.position = "top", scales = "free_x", nrow = 1) +
theme_bw(base_size = 15) +
theme(panel.spacing = unit(0, "lines"),
strip.background = element_rect(color = "black", size = 0.1, fill = "grey92"),
strip.placement = "outside",
axis.text.x = element_text(angle = 90, hjust = 1, vjust = 0.3),
panel.grid.major = element_blank(),
panel.grid.minor = element_line(colour = "grey"),
panel.border = element_rect(color = "black", fill = NA, size = 0.1),
panel.background = element_rect(fill = "white"))
# show/save base ggplot2 bar chart
p1
ggsave("p1.png", width = 20, height = 5)
# show/save ggNestedBarChart
(p2 <- ggNestedBarChart(p1))
ggsave("p2.png", width = 20, height = 5)