在ggplot中绘制这个。控制范围内的y轴线

Question

这是使用base，我可以控制x和y轴范围，其中应该绘制线条。

plot(mtcars$mpg, mtcars$hp, ylim = c(0, 400), xlim = c(0, 50), axes = F, xlab  = 'mpg', ylab = 'hp', pch = 16)
axis(side = 2, at = seq(100, 400, 100))
axis(side = 1, at = seq(10, 30, 10))

ggplot(data = mtcars, aes(x = mpg, y = hp))+geom_point()+
theme(panel.background = element_blank())+
scale_x_continuous(breaks = seq(10, 30, 10), limits = c(0, 50))+
scale_y_continuous(breaks = seq(100, 400, 100), limits = c(0, 400))

如何像基本图一样添加轴线？我尝试了scale_y_continuous和scale_x_continuous，但它总是画到情节的结尾。

Answer 1

您可以使用ggthemes包来实现目标：

library(ggthemes)
ggplot(data = mtcars, aes(x = mpg, y = hp))+geom_point()+
    geom_rangeframe(data = data.frame(mpg = c(10, 30), hp = c(100, 400))) +
    theme_tufte() +
    scale_x_continuous(breaks = seq(10, 30, 10), limits = c(0, 50))+
    scale_y_continuous(breaks = seq(100, 400, 100), limits = c(0, 400))

如果您愿意，您可以手动绘制它们：

ggplot(data = mtcars, aes(x = mpg, y = hp))+geom_point()+
    geom_segment(aes_all(c('x', 'y', 'xend', 'yend')),
                 data = data.frame(x = c(0, 10), xend = c(0, 30), y = c(100, 0), yend = c(400, 0))) +
    theme(panel.background = element_blank()) +
    scale_x_continuous(breaks = seq(10, 30, 10), limits = c(0, 50), expand = c(0, 0))+
    scale_y_continuous(breaks = seq(100, 400, 100), limits = c(0, 400), expand = c(0, 0))