如何使用数据后面的 abline() 绘制网格线? [英] How do I draw gridlines using abline() that are behind the data?

问题描述

当我使用 abline() 在绘图上绘制网格线时，网格线将绘制在数据上.

When I draw grid lines on a plot using abline() the grid lines are drawn over the data.

有没有办法在数据后面绘制 abline() 行?我觉得这样会更好看.

Is there a way to draw the abline() lines behind the data? I feel this would look better.

示例:

x <- seq(0, 10)
y <- x
plot(x, y, col = 'red', type = 'o', lwd = 3, pch = 15)
abline(h = seq(0, 10, .5), col = 'lightgray', lty = 3)
abline(v = seq(0, 10, .5), col = 'lightgray', lty = 3)

生成的图有灰色网格线穿过数据(红线).我希望红线位于灰线之上.

The plot produced has the gray grid lines going over the data (red line). I would like the red line to be on top of the gray lines.

推荐答案

plot() 的 panel.first 参数可以接受一个函数列表或向量，这样你可以把你的 abline() 调用放在那里.

The panel.first argument of plot() can take a list or vector of functions so you can put your abline() calls in there.

plot(1:4, panel.first = 
       c(abline(h = 1:4, lty = 2, col = 'grey') 
        ,abline(v = 1:4, lty = 2, col = 'grey')))

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