Question

到目前为止，我已经看到的所有解决此问题的解决方案都涉及手动设置图例的坐标，使其位于图的外部。我有100多个图，因此希望能够在每个图上重用相同的代码，以默认将图例放置在图外。

这里有两个数据框，一个是成功求职者，另一个是所有申请该职位的人：

Id <- c(1,5,7,9,11,12,13,15,17,18)
Type <- c("Beginner", "Expert", "Intermediate", "Beginner", 
"Professional", "Expert", "Intermediate", "Professional", "Professional", 
"Expert")
Response<- c(0,1,2,2,1,2,1,2,1,1)
Successful <- data.frame(Id, Type, Response)
Successful

#   Successful
Id  Type             Response    
1   Beginner         0
5   Expert           1
7   Intermediate     2
9   Beginner         2
11  Professional     1
12  Expert           2
13  Intermediate     1
15  Professional     2
17  Professional     1
18  Expert           1

Id <- c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18)
Type <- c("Beginner", "Expert", "Professional", "Beginner", "Expert", 
"Expert", "Intermediate", "Expert", "Beginner", "Intermediate", 
"Professional", "Expert", "Intermediate","Intermediate", "Professional", 
"Beginner", "Professional","Expert")
Response<- c(0,2,2,1,1,0,2,0,2,0,1,2,1,1,2,2,1,1)
AllApplicants <- data.frame(Id, Type, Response)
AllApplicants

#   AllApplicants
Id  Type             Response        
1   Beginner         0
2   Expert           2
3   Professional     2
4   Beginner         1
5   Expert           1
6   Expert           0
7   Intermediate     2
8   Expert           0
9   Beginner         2
10  Intermediate     0
11  Professional     1
12  Expert           2
13  Intermediate     1
14  Intermediate     1
15  Professional     2
16  Beginner         2
17  Professional     1
18  Expert           1

如果我们绘制这些数据的图：

colors <- c("red", "orange", "green")
barplot(round(100*prop.table(table(AllApplicants$Response, 
AllApplicants$Type),2), 1),
    main="Responses of applicants", xlab="Level", ylab= "Proportion", 
    col=colors, legend.text = T)

图例显示与情节重叠。我知道可以手动设置图形的边距和图例的位置：

par(mar=c(5.1,4.1,4.1,8))
legend(5,90, legend=c(0,1,2), fill=colors, xpd=T)

但是，如果我在barplot（）函数中包含legend.text = TRUE，我希望保留自动生成的图例，并使其自动将图例放置在图的右侧和右侧。调整图的大小和缩放时，我还需要它呆在那里。

任何帮助将不胜感激！

Answer 1

ggplot2解决方案可以工作吗？

library(ggplot2)

df <- as.data.frame(round(100*prop.table(table(AllApplicants$Response, AllApplicants$Type),2), 1))

ggplot(df, aes(x=Var2, y=Freq)) + 
geom_col(aes(fill=Var1)) + 
ggtitle("Responses of applicants") + 
theme(plot.title = element_text(hjust=0.5)) + 
xlab("Level") + ylab("Proportion") + 
theme(legend.title = element_blank())

在图外设置图例的方法

1 个答案: