r - ggplot中的混合线和散点图

Question

我环顾四周，但是我对此感到困惑。 我找不到绘制与散点图无关的线的方法。 这是我的一些数据和代码来澄清问题。我有以下形式的数据

> head(allData)
  AnnounceDate MarketProbability DealStatus binary BrierScore
1   2000-04-10         0.3333333   Complete      1  0.2340565
2   2000-06-14         0.2142857   Complete      1  0.3618200
3   2000-06-26         0.6846154   Complete      1  0.3690167
4   2000-06-16         0.1875000   Complete      1  0.4364041
5   2000-10-05         0.9555556   Complete      1  0.3078432
6   2000-10-19         0.8500000   Complete      1  0.2670799

我想创建 MarketProbabilities与 AnnounceDate的散点图，并使用颜色识别 DealStatus是 Completed还是 Terminated。

(ggplot(data=allData, aes(x=AnnounceDate, y=MarketProbability, colour=DealStatus))
 + geom_point() + scale_colour_hue(h = c(180,0)))

我还想覆盖一个不断变化的Brier得分，我已经尝试过

(ggplot(data=allData, aes(x=AnnounceDate, y=MarketProbability, colour=DealStatus))
 + geom_point() + scale_colour_hue(h=c(180,0))
 + geom_line(aes(x=AnnounceDate, y=BrierScore)))

我很困惑为什么绘制了两条彩色线？如何将线与先前绘制的数据分离？

Answer 1

正如@MattBagg指出的，此问题已通过将颜色的aes()从主ggplot()调用移出到geom_point()调用中而得以解决。

library(ggplot2)

allData = read.table(header=TRUE,
colClasses=c("Date", "numeric", "character", "numeric", "numeric"),
text="AnnounceDate MarketProbability DealStatus binary BrierScore
2000-04-10         0.3333333   Complete      1  0.2340565
2000-06-14         0.2142857   Complete      1  0.3618200
2000-06-26         0.6846154   Complete      1  0.3690167
2000-06-16         0.1875000   Complete      1  0.4364041
2000-10-05         0.9555556   Complete      1  0.3078432
2000-10-19         0.8500000   Complete      1  0.2670799")

p1 = ggplot(data=allData, aes(x=AnnounceDate)) +
     geom_point(aes(y=MarketProbability, colour=DealStatus)) + 
     scale_colour_hue(h = c(180,0)) + 
     geom_line(aes(y=BrierScore))

ggsave(filename="plot_1.png", plot=p1, height=2.5, width=5)