r - 如何在ggplot2中制作单个堆积的条形图

Question

Ancestry <- data.frame(Race = c("European", "African American", "Asian", "Hispanic", "Other"), Proportion = c(40, 30, 10, 15, 5))
Ancestry %>% 
ggplot(aes(y = Proportion, fill = Race)) + 
  geom_bar(stat="identity", colour="white")

运行上面的代码给我以下错误:

Warning in min(x, na.rm = na.rm) :
  no non-missing arguments to min; returning Inf
Warning in max(x, na.rm = na.rm) :
  no non-missing arguments to max; returning -Inf
Warning in min(diff(sort(x))) :
  no non-missing arguments to min; returning Inf
Warning in x - width/2 :
  longer object length is not a multiple of shorter object length
Warning in x + width/2 :
  longer object length is not a multiple of shorter object length
Error in data.frame(list(y = c(40, 30, 10, 15, 5), fill = c(3L, 1L, 2L,  : 
  arguments imply differing number of rows: 5, 2947

我正在寻找创建类似于此的堆叠式条形图:

Answer 1

您需要为x轴创建一个虚拟变量。然后使用类似于geom_col的geom_bar(stat = "identity")绘制堆叠的条形图+ geom_text将文本放在条形图上。

您显示的情节使用了theme_economist包中的ggthemes。

library(tidyverse)

Ancestry <- data.frame(Race = c("European", "African American", "Asian", "Hispanic", "Other"), 
                       Proportion = c(40, 30, 10, 15, 5))

Ancestry <- Ancestry %>% 
  mutate(Year = "2006")

ggplot(Ancestry, aes(x = Year, y = Proportion, fill = Race)) +
  geom_col() +
  geom_text(aes(label = paste0(Proportion, "%")),
            position = position_stack(vjust = 0.5)) +
  scale_fill_brewer(palette = "Set2") +
  theme_minimal(base_size = 16) +
  ylab("Percentage") +
  xlab(NULL)

library(ggthemes)

ggplot(Ancestry, aes(x = Year, y = Proportion, fill = Race)) +
  geom_col() +
  geom_text(aes(label = paste0(Proportion, "%")),
            position = position_stack(vjust = 0.5)) +
  theme_economist(base_size = 14) +
  scale_fill_economist() +
  theme(legend.position = "right", 
        legend.title = element_blank()) +
  theme(axis.title.y = element_text(margin = margin(r = 20))) +
  ylab("Percentage") +
  xlab(NULL)

由 reprex package(v0.2.0.9000)创建于2018-08-26。