具有错误百分比的多个变量的图形堆栈条

Question

我正在尝试获取多个变量的图形堆栈栏以显示每个变量中每个级别的百分比，示例：

Category  <- c(rep(c("A", "B", "C", "D"), times = 4))
Country  <- c(rep(c("Country A", "Country B", "Country C", "Country D", "Country F", "Country G"), times = 16))
Data      <- data.frame(Category, Country)

ggplot(Data,aes(x=factor(""),fill=factor(Category)))+
  geom_bar(position="fill")+
  geom_text(aes(label=scales::percent(..count../sum(..count..))), stat='count',position=position_fill(vjust=0.5))

百分比正常

现在我重塑了我的数据框，但遗憾的是我无法得到预期的结果，图表显示错误的百分比：

library(tidyr)
dflong= gather(Data, variable, freq)

ggplot(dflong,aes(x=factor(variable),fill=factor(freq)))+
  geom_bar(aes(x=factor(variable)),position="fill")+
  geom_text(aes(label=scales::percent(..count../sum(..count..))), stat='count',position=position_fill(vjust=0.5))

百分比错误

Answer 1

您可以在绘图前预先计算百分比。

library(dplyr)
library(ggplot2)

dflong %>%
  count(variable, freq, name = 'percentage') %>%
  group_by(variable) %>%
  mutate(percentage = prop.table(percentage) * 100) %>%
  ggplot() + aes(variable, percentage, fill = freq, 
                 label = paste0(round(percentage,2), '%')) + 
  geom_col() + 
  geom_text(position=position_stack(vjust=0.5))

具有错误百分比的多个变量的图形堆栈条

Graph stack bar for multiple variables with wrong percentages

r

ggplot2

reshape

geom-bar