Question

我正在尝试将条形图重新排列为降序排列（接触率最高的道路组位于顶部）。但是reorder（）函数似乎不起作用。

    for (i in uniq_wards) 
  { print(ggplot(data = subset(roads, Ward == i),
               aes(x = reorder(Roadgroup, Contact.rate),
                   y = Contact.rate,
                   fill = undecided_rate)) +
          geom_col() +
          coord_flip() +
          labs(fill = "Undecided rate", y = "Contact Rate", x = "Road Group") +
          theme(axis.text.x = element_text(angle = 90),
                text = element_text(size = 8)) +
          scale_fill_gradient(low = "gray", high = "blue", limits=c(0.0, 0.35)) +
          ggtitle(i, subtitle = "Contact Rate and Undecided Density")) 
  }

Example ggplot

第二张图片是我希望第一张图看起来像的降序示例，它使用相同的可变轴reorder（）代码：

x = reorder(Roadgroup, Contact.rate),
                   y = Contact.rate,

Working example

Answer 1

没有数据很难提供帮助。您可以尝试以下方法。我只将FUN = sum添加到您的原始代码中。如果不起作用，请提供一些示例数据。

library(tidyverse) 
    for (i in uniq_wards) 
  { print(ggplot(data = subset(roads, Ward == i),
               aes(x = reorder(Roadgroup, Contact.rate, FUN = sum),
                   y = Contact.rate,
                   fill = undecided_rate)) +
          geom_col() +
          coord_flip() +
          labs(fill = "Undecided rate", y = "Contact Rate", x = "Road Group") +
          theme(axis.text.x = element_text(angle = 90),
                text = element_text(size = 8)) +
          scale_fill_gradient(low = "gray", high = "blue", limits=c(0.0, 0.35)) +
          ggtitle(i, subtitle = "Contact Rate and Undecided Density")) 
  }

我的ggplot条形图reorder（）函数不起作用

1 个答案: