In ggplot I can add a series to a plot with:
在ggplot中，我可以在一个情节中添加一个系列:
ggplot(diamonds, aes(x = carat, y = price)) + geom_point()
How do I simply add another series, e.g. plotting the cost of rubies against diamonds. Assuming rubies was also in the diamonds dataset. I have tried to lay over the top another layer with the rubies data, but it just plots the rubies and not the diamonds/carat.
我如何简单地添加另一个系列，例如，绘制红宝石与钻石的价格。假设红宝石也在钻石数据集中。我试着在顶部的另一层铺上红宝石数据，但它只是绘制红宝石而不是钻石/克拉。
ggplot(diamonds, aes(x = carat, y = price)) + geom_point() + aes(x = rubies, y = price)
I can see that this would be possible by melding all the data together first, ready to plot it, so maybe I should go down that route. However, just adding another series to a plot like this seems like it should not be too hard, but I can't figure out how to do it.
我可以看到这是可能的通过将所有数据融合在一起，准备好绘图，也许我应该走那条路线。然而，仅仅在这样的情节中加入另一个系列似乎并不难，但我不知道怎么做。
1 个解决方案
#1
46
rubies <- data.frame(carat = c(3, 4, 5), price= c(5000, 5000, 5000))
ggplot(diamonds, aes(carat, price)) +
geom_point() +
geom_point(data = rubies, colour = "red")
#1
46
rubies <- data.frame(carat = c(3, 4, 5), price= c(5000, 5000, 5000))
ggplot(diamonds, aes(carat, price)) +
geom_point() +
geom_point(data = rubies, colour = "red")