ggplot2中带空格的图例标签

Error in labs(x = "X Axis", y = "Y Axis", title = "Title with space",  : 
  could not find function "label with space"

library(ggplot2)

data <- data.frame(
  x = 1:5,
  y = c(10, 20, 30, 40, 50),
  group = c("Group A", "Group B", "Group A", "Group B", "Group A")
)

ggplot(data, aes(x = x, y = y, color = group)) +
  geom_line() +
  labs(
    x = "X Axis",
    y = "Y Axis",
    title = "Title with space",
    color = `Group A` # 使用反引号
  )

ggplot(data, aes(x = x, y = y, color = group)) +
  geom_line() +
  labs(
    x = "X Axis",
    y = "Y Axis",
    title = "Title with space",
    color = paste("Group A") # 使用 paste 函数
  )