我有一个问题,添加图例到不同的平滑在ggplot。
library(splines)
library(ggplot2)
temp <- data.frame(x = rnorm(200, 20, 15), y = rnorm(200, 30, 8))
ggplot(data = temp, aes(x, y)) + geom_point() +
geom_smooth(method = 'lm', formula = y ~ bs(x, df=5, intercept = T), col='blue') +
geom_smooth(method = 'lm', formula = y ~ ns(x, df=2, intercept = T), col='red')
我有两条样条线:红色和蓝色。我怎样才能为他们添加一个图例?
https://stackoverflow.com/questions/36276240
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