如何在R中使用ggplot增加哑铃图的间隔

install.packages("ggplot2")

library(ggplot2)

data <- data.frame(
  group = c("Group A", "Group B", "Group C"),
  name = c("Variable 1", "Variable 2", "Variable 3"),
  value = c(10, 15, 20)
)

data$group <- factor(data$group, levels = c("Group A", "Group C", "Group B"))

ggplot(data, aes(x = value, y = group, color = group)) +
  geom_dumbbell(size = 2, size_x = 0.5, size_xend = 0.5) +
  labs(x = "Value", y = "Group") +
  theme_minimal()