如何在ggboxplot中改变箱图的顺序？

library(ggplot2)

# 创建一个示例数据集
data <- data.frame(
  category = c("A", "B", "C", "D"),
  value = c(10, 15, 8, 12)
)

# 使用 reorder() 函数重新排序 category 变量
data$category <- reorder(data$category, data$value)

# 绘制箱图
ggplot(data, aes(x = category, y = value)) +
  geom_boxplot()

# 创建一个示例数据集
data <- data.frame(
  category = c("A", "B", "C", "D"),
  value = c(10, 15, 8, 12)
)

# 将 category 变量转换为有序因子，并指定自定义的顺序
data$category <- factor(data$category, levels = c("C", "A", "D", "B"))

# 绘制箱图
ggplot(data, aes(x = category, y = value)) +
  geom_boxplot()