r - ggplot2::position_stack中的距离如何缩放？

我想在ggplot的堆积条旁边绘制带有标签的人口金字塔。我使用position_stack(vjust=1.3)使用下面的代码使标签显示在条的“顶部”旁边，但是我不理解命令如何缩放标签的位置。

library(tidyverse)

data.frame(
  sex = c("F", "F", "F", "F", "F", "F", "F", "F", "M", "M", "M", "M", "M", "M", "M", "M"),
  ag = c("0-9", "10-19", "20-29", "30-39", "40-49", "50-59", "60-69", "70+"),
  n = c(-0.21, -0.12, -0.09, -0.03, -0.04, -0.01, 0, 0, 0.22, 0.11, 0.06, 0.04, 0.02, 0.03, 0.01, 0),
  stringsAsFactors = F
) %>%
  ggplot(aes(x=ag, y = n, fill=sex)) +
  geom_col() +
  scale_fill_brewer("",labels = c("Women", "Men"), palette = "Set1") +
  coord_flip() +
  geom_text(data = . %>% dplyr::filter(sex == "M"),
            aes(label = n),
            position=position_stack(vjust=1.3)) +
  geom_text(data = . %>% dplyr::filter(sex == "F"),
            aes(label = n),
            position=position_stack(vjust=-0.3))

在结果图中，标签与条的上边缘不等距。我希望标签在每个栏旁边都整齐地出现。

最佳答案

您可以尝试position_nudge

   df %>%
{ggplot(data=.,aes(x=ag, y = n, fill=sex,label = n)) +
  geom_col() +
  geom_text(position = position_nudge(y = ifelse(.$sex == "F", -0.02, 0.02)))+
  coord_flip()}