R语言 ggplot可以在不引入随机噪声的情况下将重叠点隔开吗？

4xrmg8kj 于 2023-07-31 发布在其他

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我的数据在x轴上是分类的，在y轴上是连续的。我正在尝试制作一个与此类似的情节：
x1c 0d1x的数据
我不知道如何得到的点，以避免重叠-既不是抖动，也不是道奇似乎是相当我正在寻找的。
下面是一个包含一些数据的示例：

A <- c(5.1, 5.2, 4.8)
B <- c(1.3, 2.8, 3.2)
C <- c(4.5, 4.5, 4.5)
D <- c(8.9, 7.6, 7.6)

example <- data.frame(A, B, C, D) %>%
              pivot_longer(c(A,B,C, D),
                           names_to = "Type", 
                           values_to = "Value", 
                           cols_vary = "slowest")

ggplot(example, aes(x = Type, y = Value, fill = Type)) +
  stat_summary(fun = "mean", 
               colour = "black", 
               size = 0.3,
               width = 0.4,
               geom = "crossbar") +
  stat_summary(fun.data = mean_sdl, 
               fun.args = list(mult = 1), 
               geom = "errorbar",
               linewidth = 0.8,
               width = 0.3,
               colour = "black") +
  geom_point(size = 3,
             shape = 21,
             #alpha = 0.5,
             colour = "black",
             stroke = 1)

字符串
它生成的图看起来像这样：

的
我希望能够看到C组和D组中的所有三个点，但我不想移动B组中的点。
我不想引入抖动-如果点不重叠，那么我希望他们保持中心，当他们重叠时，我希望他们均匀间隔。
Position_dodge有效，但适用于所有类别，而不是仅在需要时才应用。
使用geom_dotplot给出了最接近的结果，但我不希望值被分箱-y值的细微差异很重要，点需要在正确的y位置。
有没有办法在R中实现这一点？

r

来源：https://stackoverflow.com/questions/76717983/can-ggplot-space-out-overlapping-points-without-introducing-random-noise

1条答案

按热度按时间

jpfvwuh41#

一种选择是使用geom_dotplot()来获得您想要的结果，例如：

library(tidyverse)

A <- c(5.1, 5.2, 4.8)
B <- c(1.3, 2.8, 3.2)
C <- c(4.5, 4.5, 4.5)
D <- c(8.9, 7.6, 7.6)

example <- data.frame(A, B, C, D) %>%
  pivot_longer(c(A,B,C, D),
               names_to = "Type", 
               values_to = "Value", 
               cols_vary = "slowest")

ggplot(example, aes(x = Type, y = Value, fill = Type)) +
  stat_summary(fun = "mean", 
               colour = "black", 
               size = 0.3,
               width = 0.4,
               geom = "crossbar") +
  stat_summary(fun.data = mean_sdl, 
               fun.args = list(mult = 1), 
               geom = "errorbar",
               linewidth = 0.8,
               width = 0.3,
               colour = "black") +
  geom_dotplot(stackdir = "center", 
               binaxis = "y", 
               binwidth = .2,
               binpositions = "all",
               stackratio = 1.25,
               dotsize = 1.5)
#> Warning: Using `size` aesthetic for lines was deprecated in ggplot2 3.4.0.
#> ℹ Please use `linewidth` instead.
#> This warning is displayed once every 8 hours.
#> Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
#> generated.

字符串
x1c 0d1x的数据
创建于2023-07-19，使用reprex v2.0.2
另一种可能的选择（更通用的解决方案）是使用来自ggbeeswarm package的geom_beeswarm()，例如

library(tidyverse)
library(ggbeeswarm)

A <- c(5.1, 5.2, 4.8)
B <- c(1.3, 2.8, 3.2)
C <- c(4.5, 4.5, 4.5)
D <- c(8.9, 7.6, 7.6)

example <- data.frame(A, B, C, D) %>%
  pivot_longer(c(A,B,C, D),
               names_to = "Type", 
               values_to = "Value", 
               cols_vary = "slowest")

ggplot(example, aes(x = Type, y = Value, fill = Type)) +
  stat_summary(fun = "mean", 
               colour = "black", 
               size = 0.3,
               width = 0.4,
               geom = "crossbar") +
  stat_summary(fun.data = mean_sdl, 
               fun.args = list(mult = 1), 
               geom = "errorbar",
               linewidth = 0.8,
               width = 0.3,
               colour = "black") +
  geom_beeswarm(method = "centre",
                shape = 21,
                size = 4,
                cex = 4.5)
#> Warning: Using `size` aesthetic for lines was deprecated in ggplot2 3.4.0.
#> ℹ Please use `linewidth` instead.
#> This warning is displayed once every 8 hours.
#> Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
#> generated.
#> Warning: In `position_beeswarm`, method `center` discretizes the data axis (a.k.a the
#> continuous or non-grouped axis).
#> This may result in changes to the position of the points along that axis,
#> proportional to the value of `cex`.
#> This warning is displayed once per session.

型

的
创建于2023-07-19带有reprex v2.0.2

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R语言 ggplot可以在不引入随机噪声的情况下将重叠点隔开吗？

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