Question

嗨，我有两个数据帧，其频率/百分比值如下。

Value  Frequency Percentage
2         1   2.777778
3         7  19.444444
4        19  52.777778
5         9  25.000000


Value Frequency Percentage
1         2   3.773585
2         3   5.660377
3         8  15.094340
4        20  37.735849
5        20  37.735849

如您所见，这些值属于1-5的相同范围。但在某些情况下，某些值没有频率（df 1中缺少值1）。如何使用2 geom_lines在同一图表中绘制百分比值？我希望两条线的共同x轴从1-5开始。

Answer 1

您可以对两个数据集进行行绑定，创建标记变量，以标识两个数据集，然后绘制

df1 = data.frame(Value = c(2,3,4,5),
                 Frequency = c(1,7,19,9),
                 Percentage = c(2.77,19.44,52.77,25))
df2 = data.frame(Value = c(1,2,3,4,5),
                 Frequency = c(2,3,8,20,20),
                 Percentage = c(3.77,5.66,15.09,37.73,37.73))

df1$Type = "A"
df2$Type = "B"

dfw = rbind(df1,df2)

ggplot(data = dfw, aes(x = Value, y = Percentage, color = Type)) + geom_line()

Answer 2

df1<-data.frame(Value = c(2,3,4,5),
                Frequency = c(1,7,19,9),
                Percentage = c(2.777778,19.444444,52.777778,25.000000)
                )

 df2<-data.frame(Value = c(1,2,3,4,5),
                 Frequency = c(2,3,8,20,20),
                 Percentage = c(3.773585,5.660377,15.094340,37.735849,37.735849
                 ))               

df1$N<-factor(1)
df2$N<-factor(2)

df3<-rbind(df1,df2)

library(ggplot2)

plot<-ggplot(df3,aes(Value,Percentage, color = N))+
  geom_line()
print(plot)

https://i.stack.imgur.com/Iua2d.png

ggplot2：绘制具有重叠x轴值的2个图形

2 个答案: