1 图形布局

patchwork

1.1 布局方式

Code
p1 <- ggplot(mpg, aes(x = drv, y = cty, color = drv)) + 
    geom_boxplot(show.legend = FALSE) + 
    labs(title = "Plot 1")

p2 <- ggplot(mpg, aes(x = drv, y = hwy, color = drv)) + 
    geom_boxplot(show.legend = FALSE) + 
    labs(title = "Plot 2")

p3 <- ggplot(mpg, aes(x = cty, color = drv, fill = drv)) + 
    geom_density(alpha = 0.5) + 
    labs(title = "Plot 3")

p4 <- ggplot(mpg, aes(x = hwy, color = drv, fill = drv)) + 
    geom_density(alpha = 0.5) + 
    labs(title = "Plot 4")

p5 <- ggplot(mpg, aes(x = cty, y = hwy, color = drv)) + 
    geom_point(show.legend = FALSE) + 
    facet_wrap(~drv) +
    labs(title = "Plot 5")
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p1 + p2

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p1 | p2

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p1 / p2

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p1 + p2 / p3 + p4

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p1 + p2 + p3 + plot_layout(ncol = 2)

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p1 | (p2 / (p3 | p4))

Code
layout <- "
AAB
C#B
CDD
"
p1 + p2 + p3 + p4 + plot_layout(design = layout)

Code
p1 + p2 + p3 + plot_layout(ncol = 2, guides = "collect")

1.2 修改子图

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p12 <- p1 + p2
p12[[2]] <- p12[[2]] + theme_light()
p12

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p1 + p4 & theme_minimal()

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p1 + p4 & scale_y_continuous(limits = c(NA, 45))

1.3 添加注释

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(p1 | p2) / p3 +                                      
    plot_annotation(title = '主标题',caption = "脚注",
                    theme = theme_gray(base_family = "mono")) &theme_minimal()+
    theme(axis.title = element_text(size=8),
          axis.text = element_text(size=8)
    )

Code

(guide_area() / (p1 + p2) / (p3 + p4) / p5) +
    plot_annotation(
        title = "City and highway mileage for cars with different drive trains",
        caption = "Source: https://fueleconomy.gov."
    ) +
    plot_layout(
        guides = "collect",
        heights = c(1, 3, 2, 4)
    ) &
    theme(legend.position = "top",
          plot.title = element_text(hjust = 0.5))

1.4 图形编号

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p123 <- p1 | (p2 / p3)
p123 + plot_annotation(tag_levels = "I") # Uppercase roman numerics i

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p123 + plot_annotation(tag_levels = "a") # lowercase letters A

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p123 + plot_annotation(tag_levels = "1") #  numbers

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p123[[2]]

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p123[[2]] <- p123[[2]] + plot_layout(tag_level = "new")
p123 + plot_annotation(tag_levels = c("I","a"))

1.5 图形插入

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p1 + inset_element(p2, left = 0.6, bottom = 0.6, right = 1, top = 1)

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p24 <- p2 / p4 + plot_layout(guides = "collect")
p1 + inset_element(p24, left = 0.5, bottom = 0.05, right = 0.95, top = 0.9)

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p12 <- p1 + inset_element(p2, left = 0.5, bottom = 0.5, right = 0.9, top = 0.95)
p12 & theme_bw()

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p12 + plot_annotation(tag_levels = "A")

2 保存和删除

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library(svglite)
ggsave("ggsave.svg", width = 20, height = 20, units = "cm")
base::unlink("ggsave.svg")
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