在 multi-panel 中设置单个面板的宽度和高度 plot in cowplot::plot_grid

Setting width and height of a single panel in multi-panel plot in cowplot::plot_grid

我正在使用 ggplot2cowplot 包制作 multi-panel 图,但我需要更改单个图的高度。最简单的例子是

library(ggplot2)
library(cowplot)

p1 <- ggplot(iris, aes(Sepal.Width, Sepal.Length, colour = Species)) + 
             geom_point() +
             theme(axis.text.x = element_blank(),
                   axis.title.x = element_blank(),
                   legend.position = "none")
p2 <- ggplot(iris, aes(Sepal.Width, Sepal.Length, colour = Species)) + 
             geom_point() +
             theme(axis.text.x = element_blank(),
                   axis.title.x = element_blank(),
                   axis.text.y = element_blank(),
                   axis.title.y = element_blank(),
                   legend.position = "none")
p3 <- ggplot(iris, aes(Sepal.Width, Sepal.Length, colour = Species)) + 
             geom_point() +
             theme(axis.text.y = element_blank(),
                   axis.title.y = element_blank(),
                   legend.position = "none")
p4 <- ggplot(iris, aes(Sepal.Width, Sepal.Length, colour = Species)) + 
             geom_point() + 
             theme(legend.position = "none")
p5 <- ggplot(iris, aes(Sepal.Width, Sepal.Length, colour = Species)) + 
             geom_point() +
             theme(axis.text.y = element_blank(),
                   axis.title.y = element_blank(),
                   legend.position = "none")

pL <- ggplot(iris, aes(Sepal.Width, Sepal.Length, colour = Species)) + geom_point()
l <- get_legend(pL)

# simple grid
plot_grid(p1, p2, p3, p4, p5, l, ncol = 3)

如您所见,由于包含 x-axis 标题,与同一行中的其他两个面板相比,最右上方面板中的 y 轴已缩小。

那么我该如何设置这个单个面板的相对高度和宽度,以便 y-axis 与顶行面板的 y-axis 对齐?

您不能使用 rel_heights =rel_widths() = 参数设置单个面板,当我尝试添加 axis = "tblr"align = "hv" 参数时,我收到错误消息

Error in `[.unit.list`(sizes[[x]], list_indices[[x]]) : 
  index out of bounds (unit list subsetting) 

patchwork package can get the job done. egg or multipanelfigure packages might work too

# https://github.com/thomasp85/patchwork
# install.packages("devtools", dependencies = TRUE)
# devtools::install_github("thomasp85/patchwork")
library(patchwork)
#> 
#> Attaching package: 'patchwork'
#> The following object is masked from 'package:cowplot':
#> 
#>     align_plots

layout <- "
ABC
DEF
"
p1 + p2 + p3 + p4 + p5 + l +
  plot_layout(design = layout)

(p1 + p2 + p3)/(p4 + p5 + l) +
  plot_layout(nrow = 2) +
  plot_annotation(title = "Title",
                  subtitle = "Subtitle",
                  tag_levels = 'i',
                  tag_suffix = ')')

reprex package (v0.3.0)

于 2020 年 3 月 26 日创建

@Tung 的回答很好,但我也在 cowplot 中找到了如何做到这一点。您只需创建两个单独的面板,每行一个,然后您可以使用 align=axis= 参数来对齐 y 轴。我们根据 水平 参考线垂直对齐 y 轴,因此我们指定 align = "h".

top_row <- plot_grid(p1, p2, p3, align = "h", axis = "l", ncol = 3)

bottom_row <- plot_grid(p4, p5, l, align = "h", axis = "l", ncol = 3)

plot_grid(top_row, bottom_row, ncol = 1)