[英]Merging two y-axes titles in patchwork
Any ideas as to how I can "merge" two identical y-axes titles into one, and then place this y-axis title in the middle between the plot?关于如何将两个相同的 y 轴标题“合并”为一个,然后将此 y 轴标题放在 plot 之间的任何想法? I have succeded in merging legends by using
plot_layout(guides = "collect")
but I cannot seem to find anything similar for axes.我已经通过使用
plot_layout(guides = "collect")
成功合并了图例,但我似乎找不到任何类似的轴。 In this case I would merge the two axes titles called disp_disp_disp into one.在这种情况下,我会将名为 disp_disp_disp 的两个轴标题合并为一个。
mtcars
library(ggplot2)
library(patchwork)
p1 <- ggplot(mtcars) +
geom_point(aes(mpg, disp)) +
labs(x = "mpg", y = "disp_disp_disp_disp_disp")
p2 <- ggplot(mtcars) +
geom_boxplot(aes(gear, disp, group = gear)) +
labs(x = "gear", y = "disp_disp_disp_disp_disp")
p3 <- ggplot(mtcars) +
geom_point(aes(hp, wt, colour = mpg)) +
ggtitle('Plot 3')
p1 / (p2 | p3)
The only way I could think of is to hack this at the gtable level, but I'd also be excited to learn more convenient ways.我能想到的唯一方法是在 gtable 级别破解它,但我也很高兴学习更方便的方法。 Here is the gtable method:
这是gtable方法:
library(ggplot2)
library(patchwork)
library(grid)
p1 <- ggplot(mtcars) +
geom_point(aes(mpg, disp)) +
labs(x = "mpg", y = "disp_disp_disp_disp_disp")
p2 <- ggplot(mtcars) +
geom_boxplot(aes(gear, disp, group = gear)) +
labs(x = "gear", y = "disp_disp_disp_disp_disp")
p3 <- ggplot(mtcars) +
geom_point(aes(hp, wt, colour = mpg)) +
ggtitle('Plot 3')
p123 <- p1 / (p2 | p3)
# Convert to gtable
gt <- patchworkGrob(p123)
# Stretching one y-axis title
is_yaxis_title <- which(gt$layout$name == "ylab-l")
# Find new bottom position based on gtable::gtable_show_layout(gt)
gt$layout$b[is_yaxis_title] <- gt$layout$b[is_yaxis_title] + 18
# Deleting other y-axis title in sub-patchwork
is_patchwork <- which(gt$layout$name == "patchwork-table")
pw <- gt$grobs[[is_patchwork]]
pw <- gtable::gtable_filter(pw, "ylab-l", invert = TRUE)
# Set background to transparent
pw$grobs[[which(pw$layout$name == "background")[1]]]$gp$fill <- NA
# Putting sub-patchwork back into main patchwork
gt$grobs[[is_patchwork]] <- pw
# Render
grid.newpage(); grid.draw(gt)
Created on 2020-12-14 by the reprex package (v0.3.0)由代表 package (v0.3.0) 于 2020 年 12 月 14 日创建
I guess it would be slightly easier to strip out the y axis title before the plot is built then draw it back on after it is plotted:我想在构建 plot 之前去掉 y 轴标题会稍微容易一些,然后在绘制后将其重新绘制:
library(ggplot2)
library(patchwork)
p1 <- ggplot(mtcars) +
geom_point(aes(mpg, disp)) +
labs(x = "mpg", y = "disp_disp_disp_disp_disp")
p2 <- ggplot(mtcars) +
geom_boxplot(aes(gear, disp, group = gear)) +
labs(x = "gear", y = "disp_disp_disp_disp_disp")
p3 <- ggplot(mtcars) +
geom_point(aes(hp, wt, colour = mpg)) +
ggtitle('Plot 3')
ylab <- p1$labels$y
p1$labels$y <- p2$labels$y <- " "
p1 / (p2 | p3)
grid::grid.draw(grid::textGrob(ylab, x = 0.02, rot = 90))
Another option if you want to avoid getting your hands dirty with grobs altogether is to specify a text-only ggplot and add that as your axis text:如果您想避免完全被 grobs 弄脏,另一个选择是指定一个纯文本 ggplot 并将其添加为您的轴文本:
p4 <- ggplot(data.frame(l = p1$labels$y, x = 1, y = 1)) +
geom_text(aes(x, y, label = l), angle = 90) +
theme_void() +
coord_cartesian(clip = "off")
p1$labels$y <- p2$labels$y <- " "
p4 + (p1 / (p2 | p3)) + plot_layout(widths = c(1, 25))
This behaves a bit better on resizing too.这在调整大小时也表现得更好。
Another way to do this with gridExtra
.使用
gridExtra
执行此操作的另一种方法。
library(ggplot2)
library(patchwork)
library(gridExtra)
p1 <- ggplot(mtcars) +
geom_point(aes(mpg, disp)) +
labs(x = "mpg") +
theme(axis.title.y = element_blank())
p2 <- ggplot(mtcars) +
geom_boxplot(aes(gear, disp, group = gear)) +
labs(x = "gear") +
theme(axis.title.y = element_blank())
p3 <- ggplot(mtcars) +
geom_point(aes(hp, wt, colour = mpg)) +
ggtitle('Plot 3')
grid.arrange(patchworkGrob(p1 / (p2 | p3)), left = "disp_disp_disp_disp_disp")
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.