在图中标注线 [英] Label lines in a plot

问题描述

我正在使用绘制两行

plot(x, y, type = "l", color = "red")

和

points(x2, y2, type = "l", color = "blue")

我希望能够在每行旁边添加一个标签(而不是图例). 我很确定可以在 http://directlabels.r-forge中使用该程序包. r-project.org/.

I want to be able to add a label next to each line (instead of a legend). I am pretty sure it is possible using the package in http://directlabels.r-forge.r-project.org/.

但是，我没有找到一种简单的方法.

Yet, I don't find an easy way of doing that.

推荐答案

您可以通过point& click方法在text()中使用locator().

You can use the locator() within text() by point&click method.

y <- rnorm(100, 10)
y2 <- rnorm(100, 20)
x <- 1:100

plot(x, y, type = "n", ylim = c(0, 40), xlim = c(0, 120))
lines(x, y)
lines(x, y2, col = "red")
text(locator(), labels = c("red line", "black line)"))

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