在R的情节传奇中有小节？

Question

我生成以下图例:

legend(
  "bottomleft"
  , legend=c(
    expression(bold("Long:" ~ (w==10^2 ~ ";" ~ h==10^5)))
    , expression(q[c] == 0.00 ~ ";" ~ beta == 0)
    , expression(q[c] == 0.05 ~ ";" ~ beta == 2)
    , expression(q[c] == 0.10 ~ ";" ~ beta == 10)
    , expression(q[c] == 0.20 ~ ";" ~ beta == 10)
    , expression(q[c] == 0.40 ~ ";" ~ beta == 10)
    , expression(bold("Wide:" ~ (w==10^3 ~ ";" ~ h==10^3)))
    , expression(q[c] == 0.00 ~ ";" ~ beta == 0)
    , expression(q[c] == 0.05 ~ ";" ~ beta == 2)
    , expression(q[c] == 0.10 ~ ";" ~ beta == 10)
    , expression(q[c] == 0.20 ~ ";" ~ beta == 10)
    , expression(q[c] == 0.40 ~ ";" ~ beta == 10)
  )
  , col=c("n", 1, 2, 3, 4, 5, -1, 1, 2, 3, 4, 5)
  , lty=c(F, 1, 1, 1, 1, 1, -1, 2, 2, 2, 2, 2)
  , cex=.65
)

这给了我:

有一个标题更好,它也跨越"线+点"样本区域:

我怎么能意识到这一点？(我试图设置n或FALSE在lty-section中,但那不起作用,......).我也没有调整qc和 - 值beta,但这是一个不同的故事,......

Answer 1

使用@DWin提出的解决方法:

设置示例图:

plot(1:10,type="n")

保存图例并phantom隐藏要手动编写的标题

saveleg <- legend(
  "bottomleft"
  , legend=c(
      expression(phantom(bold("Long:" ~ (w==10^2 ~ ";" ~ h==10^5))))
    , expression(q[c] == 0.00 ~ ";" ~ beta == 0)
    , expression(q[c] == 0.05 ~ ";" ~ beta == 2)
    , expression(q[c] == 0.10 ~ ";" ~ beta == 10)
    , expression(q[c] == 0.20 ~ ";" ~ beta == 10)
    , expression(q[c] == 0.40 ~ ";" ~ beta == 10)
    , expression(phantom(bold("Wide:" ~ (w==10^3 ~ ";" ~ h==10^3))))
    , expression(q[c] == 0.00 ~ ";" ~ beta == 0)
    , expression(q[c] == 0.05 ~ ";" ~ beta == 2)
    , expression(q[c] == 0.10 ~ ";" ~ beta == 10)
    , expression(q[c] == 0.20 ~ ";" ~ beta == 10)
    , expression(q[c] == 0.40 ~ ";" ~ beta == 10)
  )
  , col=c("n", 1, 2, 3, 4, 5, -1, 1, 2, 3, 4, 5)
  , lty=c(F, 1, 1, 1, 1, 1, -1, 2, 2, 2, 2, 2)
  , cex=.65
  , trace=TRUE
)

然后text使用新指定的x轴值从已保存的图例中获取要重新绘制的两位的y 轴值.

text(
    c(0.6,0.6),
    saveleg$text$y[c(1,7)],
    c(
      expression(bold("Long:" ~ (w==10^2 ~ ";" ~ h==10^5))),
      expression(bold("Wide:" ~ (w==10^3 ~ ";" ~ h==10^3)))
     ),
    cex=0.65,
    pos=4
)

结果: