2012-12-25 43 views
4

当使用ggplot2进行绘图并尝试根据data.frame中的数值变量重新排列因子时,我总是会遇到此问题。通过数字变量重新排序因子

structure(list(Team = structure(1:32, .Label = c("ARI", "ATL", 
"BAL", "BUF", "CAR", "CHI", "CIN", "CLE", "DAL", "DEN", "DET", 
"GB", "HOU", "IND", "JAC", "KC", "MIA", "MIN", "NE", "NO", "NYG", 
"NYJ", "OAK", "PHI", "PIT", "SD", "SEA", "SF", "STL", "TB", "TEN", 
"WAS"), class = "factor"), Fans = c(49L, 145L, 175L, 75L, 104L, 
167L, 101L, 147L, 157L, 304L, 112L, 338L, 200L, 118L, 37L, 60L, 
65L, 225L, 371L, 97L, 163L, 87L, 84L, 102L, 111L, 85L, 422L, 
311L, 63L, 56L, 49L, 271L)), .Names = c("Team", "Fans"), row.names = c(NA, 
-32L), class = "data.frame") 

这并不由#的球迷重新排序队:

ggplot(total.fans, aes(x=reorder(Team, Fans), y=Fans)) + geom_bar() 

而这种转换调用不会改变任何数据:

transform(total.fans, variable=reorder(Team, -Fans)) 

我缺少什么?

回答

3

您也可以在ggplot()与功能factor()通话之外对您的因子重新排序,然后使用ggplot()

total.fans$Team <- factor(total.fans$Team , levels = total.fans[order(total.fans$Fans), 1]) 
ggplot(total.fans, aes(x=Team, y=Fans)) + geom_bar(stat="identity") 
+0

感谢这个工作,我会接受解决方案,但仍然试图找出其他答案出了什么问题。 – tcash21

5

它为我的作品与GGPLOT2 0.9.3,虽然我得到警告:我想你想

ggplot(total.fans, aes(x=reorder(Team, Fans),y=Fans)) + 
    geom_bar(stat="identity") 

enter image description here

(发布,而不是评论,所以我可以展示的情节......)

+0

我刚刚从ggplot 0.2.1升级到0.9.3,并试图ggplot(total.fans,AES(X =重排(队球迷),Y =风扇))+ geom_bar时(我收到此错误) 重命名错误(x,.base_to_ggplot,warn_missing = FALSE): 找不到函数“revalue” – tcash21

+2

请确保您已更新'plyr'软件包(请参阅http://blog.rstudio.org/ 2012/12/06/ggplot2-plyr-release /) –