R ggridges 图 - 显示 y 轴刻度和标签

Question

我正在尝试随时间生成覆盖密度图，比较男性和女性的密度。这是我的输出：

我正在关注 https://cran.r-project.org/web/packages/ggridges/vignettes/gallery.html 中的澳大利亚运动员身高示例。这是我的代码：

ggplot(math_dat, aes(x = order_math, y = time, color = gender, point_color = gender, fill = gender)) +
  geom_density_ridges(
    jittered_points = TRUE, scale = .95, rel_min_height = .01,
    point_shape = "|", point_size = 3, size = 0.25,
    position = position_points_jitter(height = 0)
  ) +
  scale_y_discrete(expand = c(0, 0)) +
  scale_x_continuous(expand = c(0, 0), name = "Rankings") +
  scale_fill_manual(values = c("#D55E0050", "#0072B250"), labels = c("female", "male")) +
  scale_color_manual(values = c("#D55E00", "#0072B2"), guide = "none") +
  scale_discrete_manual("point_color", values = c("#D55E00", "#0072B2"), guide = "none") +
  coord_cartesian(clip = "off") +
  guides(fill = guide_legend(
    override.aes = list(
      fill = c("#D55E00A0", "#0072B2A0"),
      color = NA, point_color = NA)
  )
  ) +
  ggtitle("Ranks over time") +
  theme_ridges(center = TRUE)

我的问题是我无法生成任何 Y 轴刻度值，而且该示例也没有显示任何刻度值。任何想法如何让 Y 轴刻度线显示？这是一些类似于我的示例数据：

## generating dataset
order_math<-c(1,2,1,2,3,3,1,2,3,1,2,3)
gender<-c("M","F","M","M","M","F","F","M","F","M","M","F")
time<-c(1,1,2,3,3,2,1,2,3,2,3,1)
sample<-data.frame(order_math,gender,time)

更新：在@Tomasu 的建议后我更新了我的代码，但它没有运行:

ggplot(math_dat, aes(x = order_math, y = time, color = gender, point_color = gender, fill = gender)) +
  geom_density_ridges(
    jittered_points = TRUE, scale = .95, rel_min_height = .01,
    point_shape = "|", point_size = 3, size = 0.25,
    position = position_points_jitter(height = 0)
  ) +
  scale_y_reverse(limits = c(1000, 500, 100),expand = c(0, 0)) +
  scale_x_continuous(expand = c(0, 0), name = "Rankings") +
  scale_fill_manual(values = c("#D55E0050", "#0072B250"), labels = c("female", "male")) +
  scale_color_manual(values = c("#D55E00", "#0072B2"), guide = "none") +
  scale_discrete_manual("point_color", values = c("#D55E00", "#0072B2"), guide = "none") +
  coord_cartesian(clip = "off") +
  guides(fill = guide_legend(
    override.aes = list(
      fill = c("#D55E00A0", "#0072B2A0"),
      color = NA, point_color = NA)
  )
  ) +
  ggtitle("Ranks over time") +
  theme_ridges(center = TRUE)+
  theme(
    axis.ticks = element_line(size=0.5),         # turn ticks back on
    axis.ticks.length = grid::unit(5, "pt"),     # set length
    axis.ticks.y = element_line(colour = "red"), # define tick line color
    axis.text.y = element_text(vjust = .4)       # center text with tick
  )

Answer 1

解决此问题的一个简单方法是使用包含轴刻度的 theme_，因为 theme_ridges() 已将其关闭。只需一起删除该主题并使用基本的 ggplot2 主题即可达到预期的结果。

但是，假设我们仍想使用 theme_ridges() 并重新打开刻度。这可以通过 theme() 在 theme_ridges().

之后编辑来实现
我正在使用提供的 link 中的示例，因为我无法让您的示例数据正常工作。

library(ggplot2) library(ggplot2movies) library(ggridges) ggplot(movies[movies$year>1912,], aes(x = length, y = year, group = year)) + geom_density_ridges(scale = 10, size = 0.25, rel_min_height = 0.03) + theme_ridges() + theme( axis.ticks = element_line(size=0.5), # turn ticks back on axis.ticks.length = grid::unit(5, "pt"), # set length axis.ticks.y = element_line(colour = "red"), # define tick line color axis.text.y = element_text(vjust = .4) # center text with tick ) + scale_x_continuous(limits = c(1, 200), expand = c(0, 0)) + scale_y_reverse( breaks = c(2000, 1980, 1960, 1940, 1920, 1900), expand = c(0, 0) ) + coord_cartesian(clip = "off")

^{由 reprex package (v1.0.0)}
于 2021-05-11 创建

Answer 2

我认为你的问题是你需要指定组。

R ggridges 图 - 显示 y 轴刻度和标签

R ggridges plot - Showing y axis ticks and labels

r

ggplot2

axis-labels

ggridges