R语言绘图布局实例讲解-开发语言

这篇文章主要介绍了R语言绘图布局实例讲解，文中实例讲解的很清晰，有感兴趣的同学可以研究下

在R语言中，par 函数可以设置图形边距，其中oma 参数设置outer margin, mar 参数设置margin,

这些边距有什么不同呢，通过box函数可以直观的看到

box 默认在当前图形绘制边框，第一个参数which = "plot", 所以在当前图形上绘制边框

which 的值除了plot 之外，还可以选择 figure, inner, outer

接下来分别用不同的值测试一下，为了区分，为不同的边框设置不同的颜色和类型,代码如下：


attach(mtcars)
plot(wt, mpg)
abline(lm(mpg~wt))
title("Regression of MPG on Weight")
box(which = "plot", col = "red", lwd = 2)
box(which = "figure",col = "blue", lwd = 4)

为了区分，plot的边框为红色， figure 的边框为蓝色，效果如下：


par(oma=c(1,1,1,1), mar=c(2,2,2,2))
attach(mtcars)
plot(wt, mpg)
abline(lm(mpg~wt))
title("Regression of MPG on Weight")
box(which = "plot", col = "red",  lwd = 2)
box(which = "figure",col = "blue",  lwd = 4)

效果如下：


par(oma=c(2,2,2,2))
attach(mtcars)
plot(wt, mpg)
abline(lm(mpg~wt))
title("Regression of MPG on Weight")
box(which = "plot", col = "red",  lwd = 2)
box(which = "figure",col = "blue",  lwd = 4)
box(which = "outer", col = "black", lty = 8)