增加 grid.arrange plot 大小

Question

我正在使用 grid.arrange 在彼此之上顯示以下三個圖。

p1 <- ggseasonplot(ng2) + labs(title = "Natural Gas Consumption from Jan. 2001 to Nov. 2021 - Seasonal Plot", x = "Month", y = "Cubic Feet (Millions)") + scale_y_continuous(labels = unit_format(unit = "M", scale = 1e-6))
p2 <- ggsubseriesplot(ng2) + labs(title = "Natural Gas Consumption from Jan. 2001 to Nov. 2021 - Subseries Plot", x = "Month", y = "Cubic Feet (Millions)") + scale_y_continuous(labels = unit_format(unit = "M", scale = 1e-6))
p3 <- ggAcf(ng2, lag.max = 36) + labs(title = "Natural Gas Consumption from Jan. 2001 to Nov. 2021 - ACF Plot", x = "Lag", y = "Correlation") 

gridExtra::grid.arrange(p1, p2, p3, nrow = 3, ncol = 1)

結果圖不可讀。

使用高度 function 似乎只能相對於彼此調整 plot 的大小。 知道如何使每個 plot 作為一個整體更大（更長）以便每個都更具可讀性嗎？

Answer 1

在你的 markdown/knitr 塊中，嘗試一個像fig.height = 10這樣的值

```{r, fig.height = 10}
# Small fig.width
ggplot(cars, aes(speed, dist)) + geom_point()
```

或者您可以為 Rmd 文件中的所有圖形設置默認高度

knitr::opts_chunk$set(fig.height = 10)

參考

• https://community.rstudio.com/t/rmarkdown-rnotebook-text-in-graphs-too-small-lines-to-thin-after-update/123741/3
• http://zevross.com/blog/2017/06/19/tips-and-tricks-for-working-with-images-and-figures-in-r-markdown-documents/
• Plot 大小和分辨率與 R markdown, knitr, pandoc, beamer
• https://rmd4sci.njtierney.com/customising-your-figures.html