我的R geom_bar图例中的“N = 1”框是什么,如何删除?

时间:2018-05-16 19:37:05

标签: r ggplot2 legend geom-bar

这些是数据:

structure(list(Group.1 = c((name list)
), Group.2 = structure(c(4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 
4L, 4L, 3L, 3L, 6L, 6L, 6L, 6L, 6L, 6L, 6L, 5L, 5L, 5L, 1L, 1L, 
1L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("Radio", "Video", "Engineering", 
"800Mhz", "PSSRP", "Other"), class = "factor"), x = c(93.5, 208.75, 
214, 48, 66.33, 71.5, 19.5, 64.75, 17, 39, 30.75, 96.75, 30, 
19, 32.5, 12.75, 47.25, 14, 22.25, 12, 3, 128.5, 9.5, 303.2, 
290.35, 364.05, 333.25, 11.75, 553.25, 423, 6, 496)), .Names = c("Group.1", 
"Group.2", "x"), row.names = c(NA, -32L), class = "data.frame")

运行这个情节:

ggplot(data = HrSums, aes(x = Group.1, y = x, fill = Group.2)) +
  geom_bar(stat = "sum", position = position_stack(reverse = TRUE)) + 
  coord_flip() + 
  labs(title = "Hours Billed, by Technician and Shop", y = "Hours Billed", 
       x = "Technician", fill = "Shop")

我得到这个条形图:

什么是“n”框,如何从图例中删除它(仅限)?

2 个答案:

答案 0 :(得分:2)

我认为n框是因为geom_bar期望计算Group.1Group.2的每个组合出现的次数,而是您给出y aes中的值。 geom_bar可以使用不同的统计数据而非计数,但如果您想要值的总和,则需要weight美学。有两种方法可以执行此操作:一种使用weight = x中的geom_bar,另一种使用dplyr函数预先计算总和,然后将其提供给y

library(tidyverse)


ggplot(df, aes(x = Group.1, fill = Group.2)) +
  geom_bar(aes(weight = x), position = position_stack(reverse = T)) +
  coord_flip()




df_sums <- df %>%
  group_by(Group.1, Group.2) %>%
  summarise(x = sum(x))

ggplot(df_sums, aes(x = Group.1, y = x, fill = Group.2)) +
  geom_col(position = position_stack(reverse = T)) +
  coord_flip()

答案 1 :(得分:0)

如果包括以下内容,则只会看到您期望的外观:

show.legend = c(
    "x" = TRUE,
    "y" = TRUE,
    "alpha" = FALSE,
    "color" = FALSE,
    "fill" = TRUE,
    "linetype" = FALSE, 
    "size" = FALSE, 
    "weight" = FALSE
)

请参见?geom_bar上的show.legend参数:

  

show.legend符合逻辑。该图层应包括在图例中吗?   NA,默认值,包括是否映射了任何美学。永远不会   包含,并且TRUE始终包含。 它也可以是命名逻辑   向量,以精细选择要显示的美学效果