预测v7& ggplot2图形将拟合线添加到自动绘图 [英] forecast v7 & ggplot2 graphics adding fitted line to autoplot

问题描述

我正在浏览Rob J Hyndman的教程，这是该教程的链接，我的问题是如何向预测图添加拟合线，例如；

I was looking through a tutorial by Rob J Hyndman, here's the link for the tutorial, my question is how can i add a fitted line to the forecast plot eg;

library(forecast)
library(ggplot2)
fc <- forecast(fdeaths)
autoplot(fc)

我现在需要在上面的图上添加fitted(fc)，我该怎么做?

I now need to add fitted(fc)to the plot above, how do I do it?

推荐答案

这里是没有其他软件包的其他解决方案:

Here an other solution without additional packages:

fit <- data.frame(data=as.matrix(fitted(fc)), date=time(fitted(fc)))
autoplot(fc) + geom_line(data = fit,aes(date,data), col = "red")

您将ts转换为可以使用常规ggplot命令的数据框.然后，您可以添加行. 我意识到如果不加载ggfortify软件包，我的解决方案就可以工作

You transform your ts into a data frame where you can use normal ggplot command. You can then just add the line. I realized that my solution work if the package ggfortify is not loaded

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