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我想将轴文本放置在绘图中适当的水平条上方。ggplot2据我所知，下面是之后的绘图代码。数据在这个问题的底部。

除了永远存在的“什么代码可以更好地实现目标”之外，我的问题是（1）而不是我手动输入矩形和文本位置，R 如何通过算法放置它们，（2）R 如何将文本移动到最左边的矩形（我尝试根据文本中的字符数计算中点，但它不起作用）？

在此处输入图像描述

对于绘图，我创建了序列变量而不是与as.numeric(as.character(risks). 

ggplot(plotpg19, aes(x = sequence, y = scores)) +
  geom_bar(stat = "identity", width = 0.4) +
  coord_flip() +
  labs(x = "", y = "") +
  theme_bw() +
  theme(axis.text.y = element_blank(), axis.ticks.y = element_blank()) +
  geom_rect(data=plotpg19, aes(xmin= seq(1.5, 8.5, 1), 
                               xmax= seq(1.8, 8.8, 1), ymin=0, ymax=30), fill = "white") +
  geom_text(data=plotpg19, aes(x=seq(1.6, 8.6, 1), y= nchar(as.character(risks))/2, label=risks, size = 5, show_guide = FALSE)) +
  guides(size = FALSE)

下面是数据。

plotpg19 <- structure(list(risks = structure(c(8L, 7L, 6L, 5L, 4L, 3L, 2L, 
1L), .Label = c("Other", "Third parties/associates acting on our behalf", 
"Rogue employees", "Lack of understanding by top executives", 
"Lack of anti-bribery/corruption training or awareness within the business", 
"Geographic locations in which the company operates", "Industries/sector(s) in which the company operates", 
"Inadequate resources for anti-bribery/corruption compliance activities"
), class = "factor"), scores = c(15, 28, 71, 16, 5, 48, 55, 2
), sequence = 1:8), .Names = c("risks", "scores", "sequence"), class = "data.frame", row.names = c(NA, 
-8L))

这个问题给了我一些指导。在 geom_rect 中拟合 geom_text

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1 回答 1

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我不明白你为什么要绘制白色geom_rect。对于第二个问题，设置of并添加（y=0在y 处开始文本）有效。我调整了 x 参数，以便将文本绘制到条形的中途：aesgeom_texthjust=0

library(dplyr)
plotpg19 <- mutate(plotpg19, xtext = sequence + 0.55)

library(ggplot2)
ggplot(plotpg19, aes(x = sequence, y = scores)) +
  geom_bar(stat = "identity", width = 0.4) +
  coord_flip() +
  labs(x = "", y = "") +
  theme_bw() +
  theme(axis.text.y = element_blank(), axis.ticks.y = element_blank()) +
  geom_text(data = plotpg19,
            aes(x = xtext, y = 0, label = risks, size = 5, show_guide = FALSE),
            hjust = 0, vjust = 1) +
  guides(size = FALSE)

在此处输入图像描述

于 2015-07-20T14:25:25.427 回答