限制R中绘图中水平线的长度

Question

我正在尝试使用 abline

在地块上绘制一条水平线

代码如下：

plot(c(-2,3), c(-1,5), type = "n", xlab = "x", ylab = "y", asp = 1)
abline(h = 0, v = 0, col = "gray60")

我得到的输出是

我在找什么是

如何让abline绘制的线条限制在绘图区域内，如图2所示。

Answer 1

开发有关 xpd 参数的评论：

来自par帮助： xpd参数是"A logical value or NA. If FALSE, all plotting is clipped to the plot region, if TRUE, all plotting is clipped to the figure region, and if NA, all plotting is clipped to the device region"

插图：

par(xpd=T)
plot(c(-2,3), c(-1,5), type = "n", xlab = "x", ylab = "y", asp = 1)
abline(h = 0, v = 0, col = "gray60")

给出：

同时

par(xpd=F) # this is the default value
plot(c(-2,3), c(-1,5), type = "n", xlab = "x", ylab = "y", asp = 1)
abline(h = 0, v = 0, col = "gray60")

给出：

最后，

par(xpd=NA,mfrow=c(1,2))
plot(c(-2,3), c(-1,5), type = "n", xlab = "x", ylab = "y", asp = 1)
abline(h = 0, v = 0, col = "gray60")

给出：

限制R中绘图中水平线的长度

Restricting the length of horizontal line in plot in R

plot

r