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我一直在寻找这个小时难倒。我遇到过许多建议,我需要添加aes()并将颜色分配给geom_lines,但这不会产生任何内容 - 可能是因为我也有一些预测?我真的不太确定。R ggplot2:将图例添加到具有预测的时间序列
在任何情况下,我已将我的代码放在下面,并非常感谢您提供的任何帮助。
install.packages("fpp")
library(fpp)
data("books")
library(ggplot2)
paperback <- books[,1]
fit1 <- ses(paperback, alpha = 0.2, initial = "simple", h = 3)
fit2 <- ses(paperback, alpha = 0.6, initial = "simple", h = 3)
fit3 <- ses(paperback, h = 3)
autoplot(paperback,
xlab="Day", main="", size = 20) +
geom_line(data = paperback, colour = "black", aes(colour="black")) +
geom_line(data = fitted(fit1), colour = "blue", linetype = 2, aes(colour="blue")) +
geom_line(data = fitted(fit2), colour = "red", linetype = 2, aes(colour="red")) +
geom_line(data = fitted(fit3), colour = "green", linetype = 2, aes(colour = "green")) +
geom_line(data = fit1$mean, colour = "blue", linetype = 2) +
geom_line(data = fit2$mean, colour = "red", linetype = 2) +
geom_line(data = fit3$mean, colour = "green", linetype = 2)