控制facet_grid，ggplot中的间距和标签

Question

我正在尝试控制使用facet_grid形成的ggplot图中的间距和标签。我已经做了一些研究，我正在使用我认为可以帮助我实现至少第一个目标的论据，但结果并不是我所期望的。

对于可重现的示例，我使用mtcars数据集（基础R），并提供代码输出的图像，其中我指出了我想要更改的内容。

您的建议将不胜感激。

data(mtcars)
setDT(mtcars)
mtcars[, ":="(vs = as.factor(vs), am = as.factor(am), gear = as.factor(gear), carb = as.factor(carb))]

ggplot (mtcars,
         aes(x= disp , y = hp , colour = carb)) +
  geom_point (size = 2) + facet_grid ( gear ~ vs * am , margins = TRUE) +
  xlab('disp') + ylab('hp') +
  theme(panel.spacing.x=unit(2, "lines"), panel.spacing.y=unit(2, "lines"))+
  theme_economist()  + theme(plot.margin = unit(c(1, 1, 1, 1), "lines"))

Answer 1

The space between panels you can define with parameter panel.spacing in theme. The theme_economist is changing it. By default there are spaces between panels.

You can also add the labeller function label_both in order to have the variable names on each panel label.

ggplot (mtcars,
        aes(x= disp , y = hp , colour = carb)) +
  geom_point (size = 2) + facet_grid ( gear ~ vs * am , margins = TRUE, labeller = label_both) +
  xlab('disp') + ylab('hp') +
  theme(panel.spacing.x=unit(2, "lines"), panel.spacing.y=unit(2, "lines"))+
  theme_economist() + theme(plot.margin = unit(c(1, 1, 1, 1), "lines"), panel.spacing=unit(2,"lines"))

进行奇怪的模板渲染行为