我的同事和我正在尝试根据y值排序堆积条形图,而不是按字母顺序排列x值。
示例数据是:
samp.data <- structure(list(fullname = c("LJ", "PR",
"JB", "AA", "NS",
"MJ", "FT", "DA", "DR",
"AB", "BA", "RJ", "BA2",
"AR", "GG", "RA", "DK",
"DA2", "BJ2", "BK", "HN",
"WA2", "AE2", "JJ2"), I = c(2L,
1L, 3L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 3L, 2L, 3L, 3L, 3L,
3L, 3L, 3L, 3L, 3L, 3L, 3L), S = c(1L, 1L, 1L, 1L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 3L, 2L, 3L, 2L, 2L, 2L, 3L, 2L, 3L, 2L, 3L, 3L,
3L), D = c(2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 3L, 3L, 2L, 3L, 3L, 3L, 2L, 3L, 3L), C = c(0L, 2L, 1L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 3L,
2L, 3L, 3L, 3L, 3L)), .Names = c("fullname", "I", "S", "D", "C"
), class = "data.frame", row.names = c(NA, 24L))
我想要图表这是一个堆叠的条形图。我一直这样做:
md <- melt(samp.data, id=(c("fullname")))
temp.plot<-ggplot(data=md, aes(x=fullname, y=value, fill=variable) ) + geom_bar()+ opts(axis.text.x=theme_text(angle=90))+ opts(title = "Score Distribtion")
ggsave(temp.plot,filename="test.png")
但我最终想要按4个变量(I,S,D和C)的总和而不是全名的字母顺序排序。
非常感谢任何帮助!谢谢!!
答案 0 :(得分:22)
一般(非ggplot
- 特定)答案是使用reorder()
根据其他列的某些功能重置分类列中的因子级别。
## Examine the default factor order
levels(samp.data$fullname)
## Reorder fullname based on the the sum of the other columns
samp.data$fullname <- reorder(samp.data$fullname, rowSums(samp.data[-1]))
## Examine the new factor order
levels(samp.data$fullname)
attributes(samp.data$fullname)
然后使用原始问题中的代码重新绘制
md <- melt(samp.data, id=(c("fullname")))
temp.plot<-ggplot(data=md, aes(x=fullname, y=value, fill=variable) ) +
geom_bar()+
theme(axis.text.x=theme_text(angle=90)) +
labs(title = "Score Distribtion")
## ggsave(temp.plot,filename="test.png")