两个带状图和线图未显示的共同图例

Question

对于我的 rmarkdown 文档，我将两个图放在一起。第二个情节应该是第一个情节的“放大”版本。

---
title: TwoGraphs
output: pdf_document
---

```{r echo=FALSE,fig.show="hold", out.width="50%",fig.cap="Results"}
library(ggplot2)
data <- data.frame(
  a_max = 1:10 * 10,
  a_min = 1:10 * 9,
  b_max = 1:10 * 5,
  b_min = 1:10 * 4,
  c_max = 1:10 * 0.002,
  c_min = 1:10 * 0.001
)

ggplot(data, aes(x = 1:10)) +
  xlab("Time") + ylab("Amount") +
  # a
  geom_ribbon(aes(ymax = a_max, ymin = a_min, fill = "A set"), fill = '#9B7FBF') +
  geom_line(aes(y = a_max), color = "#1e152a", size=1.5, linetype="dashed") +
  geom_line(aes(y = a_min), color = "#1e152a", size=1.5) +
  # b
  geom_ribbon(aes(ymax = b_max, ymin = b_min, fill = "B set"), fill = '#ACD8DD') +
  geom_line(aes(y = b_max), color = "#5ab1bb", size=1.5, linetype="dashed") +
  geom_line(aes(y = b_min), color = "#5ab1bb", size=1.5) +
  # c
  geom_ribbon(aes(ymax = c_max, ymin = c_min, fill = "C set"), fill = '#deebd1') +
  geom_line(aes(y = c_max), color = "#a5c882", size=1.5, linetype="dashed") +
  geom_line(aes(y = c_min), color = "#a5c882", size=1.5) +
  theme_bw()

# zoom in on c
ggplot(data, aes(x = 1:10)) +
  xlab("Time") + ylab("Amount") +
  geom_ribbon(aes(ymax = c_max, ymin = c_min, fill = "C set"), fill = '#deebd1') +
  geom_line(aes(y = c_max), color = "#a5c882", size=1.5, linetype="dashed") +
  geom_line(aes(y = c_min), color = "#a5c882", size=1.5) +
  theme_bw()
```

生成绘图效果很好，但是缺少我想要的图例。特别是我想要标注色带颜色。线条不是那么重要 - 我确实在标题中提到了，虽然虚线表示大多数未排序的数据集，而实线表示数据集已排序。

我在下面的截图中标出了我想要的图例

I have tried working adding scale_fill_manual, but it didn't show the legend. Using ggpubr as suggested here 对我也不起作用，如此处所示。

---
title: TwoGraphs
output: pdf_document
---

```{r echo=FALSE,fig.show="hold", out.width="50%",fig.cap="Results"}
library(ggplot2)
data <- data.frame(
  a_max = 1:10 * 10,
  a_min = 1:10 * 9,
  b_max = 1:10 * 5,
  b_min = 1:10 * 4,
  c_max = 1:10 * 0.002,
  c_min = 1:10 * 0.001
)

p1 <- ggplot(data, aes(x = 1:10)) +
  xlab("Time") + ylab("Amount") +
  # a
  geom_ribbon(aes(ymax = a_max, ymin = a_min, fill = "Aha"), fill = '#9B7FBF') +
  geom_line(aes(y = a_max), color = "#1e152a", size=1.5, linetype="dashed") +
  geom_line(aes(y = a_min), color = "#1e152a", size=1.5) +
  # b
  geom_ribbon(aes(ymax = b_max, ymin = b_min, fill = "Behe"), fill = '#ACD8DD') +
  geom_line(aes(y = b_max), color = "#5ab1bb", size=1.5, linetype="dashed") +
  geom_line(aes(y = b_min), color = "#5ab1bb", size=1.5) +
  # c
  geom_ribbon(aes(ymax = c_max, ymin = c_min, fill = "Cehe"), fill = '#deebd1') +
  geom_line(aes(y = c_max), color = "#a5c882", size=1.5, linetype="dashed") +
  geom_line(aes(y = c_min), color = "#a5c882", size=1.5) +
  theme_bw()

p2 <- ggplot(data, aes(x = 1:10)) +
  xlab("Time") + ylab("Amount") +
  geom_ribbon(aes(ymax = c_max, ymin = c_min, fill = "Cehe"), fill = '#deebd1') +
  geom_line(aes(y = c_max), color = "#a5c882", size=1.5, linetype="dashed") +
  geom_line(aes(y = c_min), color = "#a5c882", size=1.5) +
  theme_bw()
 
library(ggpubr)

ggarrange(p1,p2,common.legend = TRUE,legend = "bottom")
```

如何让三个填充区域显示为普通图例？是否也可以添加总体 dashed-line / solid-line 图例？（即，“虚线 = 未排序，实线 = 排序”）

Answer 1

当您在 aes 外添加填充颜色时，它 over-rides 就是您放在里面的颜色。您需要删除这些并在 scale_fill_manual 中指定您的颜色。您可以使用线型美学完全相同的过程。

ggplot(data, aes(x = 1:10)) +
  xlab("Time") + ylab("Amount") +
  # a
  geom_ribbon(aes(ymax = a_max, ymin = a_min, fill = "A set")) +
  geom_line(aes(y = a_max, linetype = "sorted"), color = "#1e152a", size=1.5) +
  geom_line(aes(y = a_min, linetype = "unsorted"), color = "#1e152a", size=1.5) +
  # b
  geom_ribbon(aes(ymax = b_max, ymin = b_min, fill = "B set")) +
  geom_line(aes(y = b_max, linetype = "sorted"), color = "#5ab1bb", size=1.5) +
  geom_line(aes(y = b_min, linetype = "unsorted"), color = "#5ab1bb", size=1.5) +
  # c
  geom_ribbon(aes(ymax = c_max, ymin = c_min, fill = "C set")) +
  geom_line(aes(y = c_max, linetype = "sorted"), color = "#a5c882", size=1.5) +
  geom_line(aes(y = c_min, linetype = "unsorted"), color = "#a5c882", size=1.5) +
  theme_bw() +
  scale_fill_manual(values = c(`A set` = '#9B7FBF', `B set` = '#ACD8DD',
                               `C set` = '#deebd1')) +
  scale_linetype_manual(values = c(sorted = 1, unsorted = 2)) +
  guides(linetype = guide_legend(override.aes = list(color = "black", size = 0.4))) +
  labs(fill = "", linetype = "") +
  theme(legend.position = "bottom",
        legend.direction = "vertical")

两个带状图和线图未显示的共同图例

Common legend for two plots of type ribbon and line plots not showing

r

legend

ggplot2