r - ggplot的饼图的geom_text()标签隐藏了geom_bar()制作的饼

我使用aggregate(,, FUN = sum)函数构造了以下数据:

    structure(list(Group.1 = structure(c(1L, 2L, 3L, 1L, 2L, 3L,
1L, 2L, 3L), .Label = c("Black or African American", "White Alone",
"White Alone LR"), class = "factor"), Group.2 = structure(c(1L,
1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L), .Label = c("bus", "mixed", "rail"
), class = "factor"), x = c(75143.5182835844, 198737.537113379,
46973.6469041183, 46199.2335265697, 128026.568239224, 28933.3028730992,
75876.5845180076, 495166.957025367, 5909.04640985574), pos = c(37571.7591417922,
99368.7685566897, 23486.8234520592, 98243.1350468693, 262750.821232991,
61440.2983406679, 159281.044069158, 574347.583865287, 78861.4729821454
), labe = c(" 75,144", "198,738", " 46,974", " 46,199", "128,027",
" 28,933", " 75,877", "495,167", "  5,909")), class = c("tbl_df",
"tbl", "data.frame"), .Names = c("Group.1", "Group.2", "x", "pos",
"labe"), row.names = c(NA, -9L))

我有很好的代码来制作饼图here和here，从而导致了这一点:

modesplit <- ggplot(data = sums) +
  geom_bar( aes(factor(1), y=x, fill=Group.2), stat="identity", position="fill") +
  scale_fill_discrete(guide=guide_legend(title="Mode")) +
  coord_polar(theta="y") +
  facet_grid(.~Group.1, labeller = label_value) +
  scale_x_discrete(name=" ", breaks = NULL) +
  scale_y_continuous(name=" ", breaks = NULL)
plot(modesplit)

但是，当我尝试添加标签时:

modesplit <- ggplot(data = sums) +
  geom_bar( aes(factor(1),y=x,fill=Group.2),stat="identity", position="fill") +
  geom_text(aes(,y=pos, label = labe), size =5) +
  scale_fill_discrete(guide=guide_legend(title="Mode")) +
  coord_polar(theta="y") +
  facet_grid(.~Group.1,labeller = label_value) +
  scale_x_discrete(name=" ", breaks = NULL) +
  scale_y_continuous(name=" ", breaks = NULL) +
plot(modesplit)

饼图的“饼图”消失了:

我试过了:

去除体重秤

删除scale_fill_discrete

最佳答案

这是一个规模问题。注释掉coord_polar和您的scale_y_continuous，然后在有和没有geom_text的情况下运行代码。 geom_bar中的position = "fill"总计为1，而您的pos值则为数万。

这是一个解决方案(编辑了，因此现在可以将标签很好地放在中间)

library(dplyr)
sums2 = sums %>% group_by(Group.1) %>%
    mutate(x_scaled = x / sum(x),
           pos_scaled = pos / cumsum(x_scaled) - x_scaled / 2)

modesplit <- ggplot(data = sums2, aes(x = factor(1))) +
  geom_bar( aes(y=x_scaled, fill=Group.2), stat="identity", position="stack") +
  scale_fill_discrete(guide=guide_legend(title="Mode")) +
  coord_polar(theta="y") +
  geom_text(aes(y = pos_scaled, label = labe), size =5) +
  facet_grid(. ~ Group.1, labeller = label_value) +
  scale_x_discrete(name=" ", breaks = NULL) +
  scale_y_continuous(name=" ", breaks = NULL)

plot(modesplit)

关于r - ggplot的饼图的geom_text()标签隐藏了geom_bar()制作的饼，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/30044333/