June 2020
Beginner to intermediate
522 pages
9h 6m
Chinese
Content preview from R 语言经典实例（原书第 2 版）
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Dampened Sine Wave
图 10-58：阻尼正弦波图
10.25 在一页中显示多个图形
10.25.1 问题
需要在一个页面上并排显示多个图。
10.25.2 解决方案
将 ggplot 图形放入网格有很多方法，但最容易使用和理解的方法之一是 Thomas Lin
Pedersen 的 patchwork 添加包。CRAN 目前不提供 patchwork 添加包，但你可以使
用 devtools 包从 GitHub 进行安装：
devtools::install_github("thomasp85/patchwork")
安装该添加包后，你可以通过它在对象之间使用 + 绘制多个 ggplot 对象，然后调用
plot_layout 函数将图像排列到网格中，如图 10-59 所示。这里的示例代码有四个
ggplot 对象：
library(patchwork)
p1 + p2 + p3 + p4
patchwork 支持使用括号分组并使用 / 将分组放在其他元素下，如图 10-60 所示：
p3 / (p1 + p2 + p4)
图形
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