请教：用ggplot，x轴是离散数据，如何排序x轴的数据，如下图的星期一应该排第一，谢谢

0

QQ图片20170921113041.jpg

 
2017-09-21 添加评论
分享

没有找到相关结果

    已邀请:
    0

    heavenzone 2017-11-10 回答 


    
```{r}
    
require(ggplot2)
    
days <- data.frame(day = c("星期三","星期四","星期五","星期六","星期日","星期一","星期二"), 
    

    
                              value = sample(1:100,7))
    

    
# 情况1，按星期顺序排序
    
# 因子手动排序
    
days$day <- factor(days$day, levels = c("星期一","星期二","星期三","星期四","星期五","星期六","星期日"))
    
with(days,qplot(day,x = day, y = value) + geom_bar(stat = "identity"))
    

    
# 如果想按value的大小排序(升序)
    
days$day <- with(days, reorder(day,value))
    
with(days,qplot(day,x = day, y = value) + geom_bar(stat = "identity"))
    

    
# 如果想按value的大小排序(降序)
    
days$day <- with(days, reorder(day,-value))
    
with(days,qplot(day,x = day, y = value) + geom_bar(stat = "identity"))
    
```
    2017-11-10 0
    分享
    为什么被折叠? 0 个回复被折叠

    要回复问题请先登录或注册