3

我想只在堆叠条形图的顶部有标签。

这是我的数据框：

#create data frame 
building <- c("Burj \nKhalifa", "Zifeng \nTower", "Bank of \nAmerica Tower", 
              "Burj Al Arab", "Emirates \nTower One", "New York \nTimes Tower",
              "Emirates \nTower Two", "Rose Rayhaan \nby Rotana", "The \nPinnacle", 
              "Minsheng \nBank Building")
occupiable<- c(585, 317, 235, 198, 241, 220, 213, 237, 265, 237)
nonoccupiable <- c(244, 133, 131, 124, 113, 99, 97, 96, 95, 94)
df.build <- data.frame(building, occupiable, nonoccupiable)

#melt data frame for stack bar plot
df.build2 <- melt(df.build, id.vars="building")

还有我的堆积条形图：

#comparision true and percived values
ggplot(df.build2, aes(x=reorder(building, -value), y=value, fill=variable)) +
  geom_bar(stat="identity") +
  xlab("") +
  ylab("") +
 #geom_text(aes(label = c("29%" "30%", "36%", "39%", "32%", "31%", "31%", "29%", "29%", "28%")), size = 3, hjust = 0.5, vjust = 3, position = "stack") +
  theme(legend.position="top") +
  ggtitle("Porównanie wartości prawdziwych i odczuwalnych")

在此处输入图像描述

我想geom_text()在我的绘图代码中使用这样的标签（蓝色条的高度/整个条的高度）。它应该放在蓝色区域。我该怎么做？

4

2 回答 2

5

有 2 个问题，您在标签向量的前两个元素之间缺少逗号；并且，您的标签向量太短。即使你有看起来像 10 条的东西，实际上你有 20 条（因为它们是堆叠的）。要解决此问题，请在标签前添加 10 个空白字符串：

geom_text(
 aes(label = c(rep("",10),
 "29%", "30%", "36%", "39%", "32%", "31%", "31%", "29%", "29%", "28%")),
size = 3, hjust = 0.5, vjust = 3, position = "stack")

这使：

堆积条形图

于 2014-04-21T10:58:42.583 回答
4

另一种解决方案（我还更改了 x 轴文本的角度）：

# creating percentage variables
df.build$occ.perc <- round(df.build$occupiable / (df.build$occupiable + df.build$nonoccupiable) * 100)
df.build$nonocc.perc <- round(df.build$nonoccupiable / (df.build$occupiable + df.build$nonoccupiable) * 100)

# melt data frame for stack bar plot![enter image description here][1]
df.build2 <- cbind(
  melt(df.build, id = c("building"), measure = c(2:3)),
  melt(df.build, id = c("building"), measure = c(4:5), value.name = "perc")
)
df.build2 <- df.build2[,-c(4,5)]
df.build2$perc <- ifelse(df.build2$variable=="occupiable", df.build2$perc==NA, df.build2$perc)

# creating the plot
ggplot(df.build2, aes(x=reorder(building, -value), y=value, fill=variable)) +
  geom_bar(stat="identity") +
  xlab("") +
  ylab("") +
  geom_text(aes(label = perc), size = 3, hjust = 0.5, vjust = 2, position = "stack") +
  theme(legend.position="top", axis.text.x = element_text(angle = 45, vjust=0.5)) +
  ggtitle("Porównanie wartości prawdziwych i odczuwalnych")

结果： 在此处输入图像描述

于 2014-04-21T11:15:57.067 回答