如何使用R(ggplot2)

时间:2016-02-03 11:18:55

标签: r ggplot2 donut-chart exploded

左边是我的圆环图当前的样子,右边是它的外观:

enter image description here

有没有办法用R?爆炸圆环图?

这是我的代码:

ggplot(dat, aes(fill = goalGroups, ymax = ymax, ymin = ymin, xmax = 4.8, xmin = 3)) +
  geom_rect(color = "white") +
  coord_polar(theta="y", direction = -1) +
  xlim(c(0, 8)) +
  theme_bw() +
  theme(panel.grid=element_blank()) +
  theme(axis.text=element_blank()) +
  theme(axis.ticks=element_blank()) +
  theme(axis.title.x = element_blank()) +
  theme(axis.title.y = element_blank()) +
  theme(panel.border = element_blank())

我非常感谢任何帮助!

1 个答案:

答案 0 :(得分:4)

您可以尝试为每个类别

创建xlimylim

例如

数据

dat = data.frame(count=c(30,  10), category=c("A",  "C"),stringsAsFactors = F)

附加计算

dat$fraction = dat$count / sum(dat$count)
dat = dat[order(dat$fraction), ]
dat$ymax = cumsum(dat$fraction)-0.01
dat$ymin = c(0, head(dat$ymax, n=-1))+0.01
dat$all_=length(unique(dat$category))
dat$x1=dat$all_-(1:nrow(dat))*0.5+1
dat$x2=dat$all_-(1:nrow(dat))*0.5+2

剧情

p2=ggplot()+aes(ymin=0)+geom_rect(data=dat,aes(fill=category,ymax=ymax, ymin=ymin,  xmax=x1, xmin=x2),color = "white")+
  ylim(0,1)+
  xlim(c(0,3+length(unique(dat$category))))+
  coord_polar(theta="y", direction = -1) +
  theme_bw() +
  theme(panel.grid=element_blank()) +
  theme(axis.text=element_blank()) +
  theme(axis.ticks=element_blank()) +
  theme(axis.title.x = element_blank()) +
  theme(axis.title.y = element_blank()) +
  theme(panel.border = element_blank())
p2

enter image description here

同样适用于两个以上的类别

dat = data.frame(count=c(30,15,  10), category=c("A", "B", "C"),stringsAsFactors = F)

enter image description here