如何用晶格xyplot函数添加abline? [英] How to add abline with lattice xyplot function?

问题描述

我试图使用晶格封装的xyplot函数绘制两个变量:Eeff vs Neff.我想知道如何在此散点图上添加一条线(这是正常R图形系统中的绝对功能).

I am trying to plot two variables: Eeff vs Neff using xyplot function of lattice package. I would like to know how to add an line to this scatter plot (which is abline function in normal R graphic system).

xyplot(Neff ~ Eeff, data = phuong,
       xlab = "Energy efficiency (%)", 
       ylab = "Nitrogen efficiency (%)")

推荐答案

lattice程序包具有多个面板功能"，其中之一是panel.abline.

The lattice package has several "panel functions", one of which is panel.abline.

尝试一下，看看它是否能满足您的需求:

Try this and see if it gives you what you're looking for:

xyplot(Neff ~ Eeff, data = phuong,
       panel = function(x, y) {
         panel.xyplot(x, y)
         panel.abline(lm(y ~ x))
       }, 
       xlab = "Energy efficiency (%)", 
       ylab = "Nitrogen efficiency (%)")

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