强制一个常规的阴谋对象到一个Grob用于grid.arrange [英] force a regular plot object into a Grob for use in grid.arrange

问题描述

b <- ggplot(cars,aes(x=speed,y=dist))+geom_line()
grid.arrange(
    b,
    plot(cars),
    ncol=1
)

给我（列表（grobs = list（list（x = 0.5，y = 0.5，width = 1，height））中的错误

gives me the following error

= 1，：只在'gList'中允许'grobs'

Error in gList(list(grobs = list(list(x = 0.5, y = 0.5, width = 1, height = 1, : only 'grobs' allowed in "gList"

假设我的第二个图必须从 plot 函数。如何将输出转换为 grob 类型的对象，以便与网格很好地配合.arrange ？

Let's assume my second graph has to come out of the plot function. How would one convert that output to a grob-like object so it plays nicely with grid.arrange ?

推荐答案

您可以尝试使用gridGraphics

you can try with gridGraphics

library(gridGraphics)

grab_grob <- function(){
  grid.echo()
  grid.grab()
}

plot(cars)
g <- grab_grob()
b <- ggplot(cars,aes(x=speed,y=dist))+geom_line()
grid.arrange(
  b,g,
  ncol=1
)

或者使用gridBase。

or, alternatively, use gridBase.

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