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在R中使用组合条形图和折线图时，可以订购x轴标签吗？

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使用数据框d中的变量（日，月，计数），我使用下面的ggplot：

day <- c("Mon","Tues","Wed","Thurs","Fri","Sat","Sun","Week","Mon","Tues","Wed","Thurs","Fri","Sat","Sun","Week")
day <- factor(day, level=c("Mon","Tues","Wed","Thurs","Fri","Sat","Sun","Week"))
month<-c("Jan","Jan","Jan","Jan","Jan","Jan","Jan","Jan","Feb","Feb","Feb","Feb","Feb","Feb","Feb","Feb")
month<-factor(month,level=c("Jan","Feb"))
count <- c(4,5,6,8,3,4,9,5.57,2,4,3,7,1,9,3,4.14)
d <- data.frame(day=day,count=count,month=month)
d

下面的折线图正确地命令了几天：

ggplot()+geom_line(data=d[d$day!="Week",],aes(x=day, y=count, group=month, colour=month))

下面的条形图正确显示两个计数：

ggplot()+geom_bar(data=d[d$day=="Week",],aes(x=day, y=count, fill=month),position="dodge")

但是，组合图表中的天数顺序不正确：

ggplot()+geom_line(data=d[d$day!="Week",],aes(x=day, y=count, group=month, colour=month))+geom_bar(data=d[d$day=="Week",],aes(x=day, y=count, fill=month),position="dodge")

如何正确显示x轴上的天数顺序？

r ggplot2 axis-labels

1 回答

  • 3

    您可以使用 scale_x_discrete() 更改参数 limits= 的中断顺序 . 与原始数据框架中的因子级别顺序相同，您只需使用 limits=levels(d$day) 即可 .

    ggplot()+
  geom_line(data=d[d$day!="Week",],
                  aes(x=day, y=count, group=month, colour=month))+
  geom_bar(data=d[d$day=="Week",],
                  aes(x=day, y=count, fill=month),position="dodge")+
  scale_x_discrete(limits=levels(d$day))

    enter image description here

    回复于

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