ggplot：删除功能区边缘的线条

Question

我正在使用ggplot绘制时间进程数据（随着时间的推移固定比例到屏幕上的不同对象）并想要使用功能区来显示SE，但功能区本身在顶部和底部都有线条边缘，这使得阅读图形有点困难。我无法弄清楚如何摆脱这些边缘线。这是我的情节代码：

ggplot(d, aes(Time, y, color = Object, fill = Object)) +
  stat_summary(fun.y = "mean", geom = "line", size = 2) +
  stat_summary(fun.data = "mean_se", geom = "ribbon", alpha = .3)

有什么建议吗？

这是一个最小的工作示例。我将我的数据压缩为：

   Time Object          y      lower     upper
 1 1000      C 0.12453389 0.04510504 0.2039627
 2 1000      T 0.58826856 0.37615078 0.8003864
 3 1000      U 0.09437160 0.03278069 0.1559625
 4 1100      C 0.12140127 0.03943988 0.2033627
 5 1100      T 0.64560823 0.44898727 0.8422292
 6 1100      U 0.06725172 0.01584248 0.1186610

d <- structure(list(Time = c(1000L, 1000L, 1000L, 1100L, 1100L, 1100L), Object = structure(c(1L, 2L, 3L, 1L, 2L, 3L), .Label = c("C", 
"T", "U"), class = "factor"), y = c(0.12453389, 0.58826856, 0.0943716, 
0.12140127, 0.64560823, 0.06725172), lower = c(0.04510504, 0.37615078, 
0.03278069, 0.03943988, 0.44898727, 0.01584248), upper = c(0.2039627, 
0.8003864, 0.1559625, 0.2033627, 0.8422292, 0.118661)), .Names = c("Time", 
"Object", "y", "lower", "upper"), class = "data.frame", row.names = c("1", 
"2", "3", "4", "5", "6"))

这是新的情节代码：

ggplot(d, aes(Time, y, color = Object, fill = Object)) +
  geom_line(size = 2) +
  geom_ribbon(aes(ymin = lower, ymax = upper), alpha = .3)

Answer 1

您可以使用colour参数删除边框：

ggplot(d, aes(Time, y, color = Object, fill = Object)) +
  geom_line(size = 2) +
  geom_ribbon(aes(ymin = lower, ymax = upper), alpha = .3, colour = NA)

Answer 2

geom_ribbon了解linetype美学。如果您想将线型映射到变量，请将其包含在aes()参数中，否则，请将linetype放在外面，然后将其0赋予它，如下所示：

ggplot(d, aes(Time, y, color = Object, fill = Object)) +
  geom_line(size = 2) +
  geom_ribbon(aes(ymin = lower, ymax = upper), linetype = 0, alpha = .3)

此处有更多信息：http://docs.ggplot2.org/current/geom_ribbon.html

Answer 3

你去吧

ggplot(d, aes(Time, y,  fill=Object)) + 
  geom_line(size=2, aes(colour = Object)) + 
  geom_ribbon(aes(ymin=lower, ymax=upper), alpha=.3)

Answer 4

ggplot2的{​​{1}}现在包含一个geom_ribbon()参数，该参数有助于控制功能区轮廓的显示方式。

概述类型

outline.type

^{由reprex package（v0.3.0）于2020-05-28创建}

Linetype = 0

或者，如建议的那样，我们可以设置library(tidyverse) huron <- tibble(year = 1875:1972, level = as.vector(LakeHuron)) huron %>% ggplot(aes(year, level)) + geom_ribbon(aes(ymin = level - 1, ymax = level + 1), fill = "grey70", color = "red", outline.type = "lower") + geom_line(aes(y = level)) 删除所有行。

linetype = 0

^{由reprex package（v0.3.0）于2020-05-28创建}