我正在尝试在数据集的 2 个不同方面生成 2 个具有不同颜色的不同 geom_vlines。我这样做是为了突出两个不同方面的手段。
这是数据集:
Pclass Sex Age SibSp Parch Fare Cabin Embarked Survived
3 male 22 1 0 7.25 S 0
1 female 38 1 0 71.2833 C85 C 1
3 female 26 0 0 7.925 S 1
1 female 35 1 0 53.1 C123 S 1
3 male 35 0 0 8.05 S 0
1 male 54 0 0 51.8625 E46 S 0
这是代码:
g<-ggplot(data = train3, aes(x = Age, y = Survived, colour = factor(Pclass)))
g<-g+facet_wrap(~Sex)
g<-g+geom_point(size = 4, alpha = 0.2)+ggtitle("Survival by Gender")+theme(plot.title = element_text(hjust = 0.5))
g<-g+geom_vline(data = subset(train3,Sex=="female"), xintercept = mean(train3[which(train3$Sex=="female"),3]), colour = "pink", size = 1)
g<-g+geom_vline(data = subset(train3,Sex=="male"), xintercept = mean(train3[which(train3$Sex=="male"),3]), colour = "blue", size = 1)
g
这是输出
我实际上只想在每个方面产生 1 个 vline:女性为粉红色,男性为蓝色。
这里给出的建议也不起作用。错误显示为:
Error in .(Sex == "female") : could not find function "."