饼图内部显示标签,饼图外部显示百分比 [英] Pie chart with label shown inside and percentage shown outside the pie
问题描述
我有这样的数据,我需要绘制饼图:
I have data like this and I need to draw the pie chart:
# Creat bar chart for jam language
library("ggplot2") # Data visualization
library("dplyr") # Data manipulation
library("RColorBrewer")
myPalette <- brewer.pal(5, "Set2")
all_languages <- data.frame(
Languages = c("English", "French", "Spanish", "Portuguese", "Others"),
n = c(81, 4, 3, 2, 3),
prop = c(87.1, 4.3, 3.2, 2.2, 3.2)
)
# Add label position
all_languages <-all_languages %>%
arrange(desc(Languages)) %>%
mutate(lab.ypos = cumsum(n) - 0.5*n)
ggplot(all_languages , aes(x = "", y = n, fill = Languages)) +
geom_bar(width = 1, stat = "identity", color = "white") +
coord_polar("y", start = 0)+
geom_text(aes(y = lab.ypos, label = n), color = "white")+
scale_fill_manual(values = myPalette) +
theme_void()
这是我的图表:
现在,我还要在图表外的相应切片处添加百分比.因此,我的英文幻灯片的圆周外将是87.1%
.我的百分比存储在all_languages$prop
中.我该怎么做?
Now I want to also add the percentage outside the chart at the corresponding slice. So my English slide will have 87.1%
outside its circumference. My percentage is stored in all_languages$prop
. How do I do this?
第二,如何将标签移离中心一点点?这是因为在较小的切片中,数字标签太杂乱了.
Secondly, how do I move my label just a little bit farther from the center? This is because in the smaller slices, the number labels are too cluttered together.
ATTEMPT: I did try to follow this answer How can I put the labels outside of piechart?
但是它抛出一个错误,提示缺少两行...特别是,我的西班牙语和葡萄牙语切片没有标签.另外,我的情况也有所不同,因为我希望既在标签内部又在标签外面.
But it throws an error that says 2 rows are missing... Particularly, my Spanish and Portuguese slices don't have the label. Also, my case is different because I want BOTH label inside and percentage outside.
我尝试使用以下代码遵循该答案:
I tried to follow that answer with the following codes:
all_languages <-all_languages %>%
arrange(desc(Languages)) %>%
mutate(end = 2 * pi * cumsum(prop)/sum(prop),
start = lag(end, default = 0),
middle = 0.5 * (start + end),
hjust = ifelse(middle > pi, 1, 0),
vjust = ifelse(middle < pi/2 | middle > 3 * pi/2, 0, 1))
ggplot(all_languages) +
geom_arc_bar(aes(x0 = 0, y0 = 0, r0 = 0, r = 1,
start = start, end = end, fill = Languages)) +
geom_text(aes(x = 1.05 * sin(middle), y = 1.05 * cos(middle), label = prop,
hjust = hjust, vjust = vjust)) +
coord_fixed() +
scale_x_continuous(limits = c(-1.5, 1.4), # Adjust so labels are not cut off
name = "", breaks = NULL, labels = NULL) +
scale_y_continuous(limits = c(-1, 1), # Adjust so labels are not cut off
name = "", breaks = NULL, labels = NULL)
我收到以下警告
警告消息:删除了包含缺失值(geom_text)的2行
Warning message: Removed 2 rows containing missing values (geom_text)
我的馅饼缺少2个切片的标签:
and my pie is missing label for 2 slices:
最终决定:我将按照以下Bappa Das的回答进行操作,并稍微修改标签.我会将计数和百分比都放在饼图之外.
Final decision: I will follow Bappa Das's answer below, and edit the labels a bit. I will put both the count and the percentage outside the pie.
推荐答案
您可以将以下代码与基数R一起使用
You can use the following code with base R
library(RColorBrewer)
Languages = c("English", "French", "Spanish", "Portuguese", "Others")
n = c(81, 4, 3, 2, 3)
prop = c("87.1", "4.3", "3.2", "2.2", "3.2")
lbls <- paste(prop,"%",sep=" ")
lgd <- c("English", "French", "Spanish", "Portuguese", "Others")
cols = brewer.pal(n = length(prop), name = 'Set3')
pie(n, labels = lbls, col=cols)
legend("topright", legend=lgd, cex=0.9, bty = "n", fill = cols)
这是您想要的吗?
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