如何向 geom_text 中的文本标签添加逗号分隔符?

Jon*_*son 6 r ggplot2 geom-text

我需要更改数字格式geom_text()以包含逗号。

我已经看到了相关的问题,但我无法让这些解决方案发挥作用。我尝试过“sep =”,count/sum(count) 类型,以及我刚刚转录的一些其他代码,但不知道什么意思。在这让我发疯之前,我需要一条生命线。

这是我的数据:

 N_PASSENGERS Count Mean_Dist Mean_Time Mean_Fare
         <int> <int>     <dbl>     <dbl>     <dbl>
1            1 57216      2.16     10.2       145.
2            2  8421      1.92      9.21      213.
3            3  2022      2.01      9.67      234.
4            4   572      1.96      9.22      351.
5            5   306      2.40      9.84      505.
6            6   184      1.90      7.63      446.

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ggplot(Difference, aes(x = N_PASSENGERS, y = Mean_Dist, size = Count)) + 
  geom_point() + 
  scale_size(range = c(0, 20)) + 
  xlim(0, 6) + 
  ylim(1.75, 2.5) + 
  geom_text(aes(label = Count), 
            size = 3, vjust = 4.2, 
            WHAT THE HELL GOES HERE TO MAKE SOME COMMAS HAPPEN?) +
  theme_minimal() + 
  theme(legend.position = "none") + 
  labs(x = "Number of Passengers", 
       y = "Mean Distance",
       title = "Trips by Number of Rides and Distance") + 
  theme(plot.title = element_text(hjust = .5))
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我希望在我的数据点旁边看到 10,000 这样的数字。相反,我看到的是 10000 这样的数字。我明白这是一个幼稚的简单问题。我正在尝试自学 R,因此我感谢任何帮助。

Z.L*_*Lin 11

aes()您可以在中的美学映射内设置文本标签的格式geom_text

代替:

  ... +
  geom_text(aes(label = Count), size = 3, vjust = 4.2) +
  ...
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使用:

  ... +
  geom_text(aes(label = scales::comma(Count)), size = 3, vjust = 4.2) +
  ...
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完整数据和代码:

Difference <- read.table(text = "
                         N_PASSENGERS Count Mean_Dist Mean_Time Mean_Fare
                         1            1 57216      2.16     10.2       145.
                         2            2  8421      1.92      9.21      213.
                         3            3  2022      2.01      9.67      234.
                         4            4   572      1.96      9.22      351.
                         5            5   306      2.40      9.84      505.
                         6            6   184      1.90      7.63      446.")

ggplot(Difference, aes(x = N_PASSENGERS, y = Mean_Dist, size = Count)) + 
  geom_point() + 
  scale_size(range = c(0, 20)) + 
  xlim(0, 6) + 
  ylim(1.75, 2.5) + 
  geom_text(aes(label = scales::comma(Count)), 
            size = 3, vjust = 4.2) +
  theme_minimal() + 
  theme(legend.position = "none") + 
  labs(x = "Number of Passengers", 
       y = "Mean Distance",
       title = "Trips by Number of Rides and Distance") + 
  theme(plot.title = element_text(hjust = .5))
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阴谋


mnm*_*mnm 3

您可以使用该scales包,它允许一些格式选项,例如comma,dollarpercent

df <- data.frame(a=c("a","b","c","d"), b=c(300,1000,2000,4000))
library(ggplot2)
library(scales)
ggplot(df, aes(a, b)) + 
  geom_point(size=4) +
  scale_y_continuous(labels = comma)
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阴谋