为什么自动绘图 function 在这个来自出版物“预测：原则与实践”的例子中给出了一个错误不起作用？

Question

I am working through section 2.2 "Time Plots" of publication Forecasting: Principles and Practice by Hyndman and Athanasopoulos ( https://otexts.com/fpp3/time-plots.html ) and I can't get the autoplot() function referenced therein to work. I assume autoplot() derives from the forecast package but as you can see in the below code I have also fiddled with ggplot2 and ggfortify packages and neither of these work either. The error I get when trying the forecast package is " Error in forecast::autoplot() :. Objects of class <tbl_ts> are not supported by autoplot. "

Any ideas how to get this autoplot() function working?

Here's the publication's autoplot() output that I'm trying to ape:

Code (in this example I was trying forecast package by using forecast::autoplot(...) ; further note that installing the tsibbledata package provides the "ansett" data used in this example):

library(dplyr)
library(tsibble)
library(tsibbledata)
library(forecast)
library(ggplot2)
library(ggfortify)

melsyd_economy <- ansett %>%
  filter(Airports == "MEL-SYD", Class == "Economy") %>%
  mutate(Passengers = Passengers/1000)

forecast::autoplot(melsyd_economy, Passengers) +
  labs(title = "Ansett airlines economy class",
       subtitle = "Melbourne-Sydney",
       y = "Passengers ('000)")

Answer 1

The autoplot method for tsibble s is from the fabletools package. SeePlot time series from a tsibble .

library(dplyr)
library(ggplot2)
library(tsibbledata)
library(fabletools)

melsyd_economy <- ansett %>%
  filter(Airports == "MEL-SYD", Class == "Economy") %>%
  mutate(Passengers = Passengers / 1000)

autoplot(melsyd_economy, Passengers) +
  labs(
    title = "Ansett airlines economy class",
    subtitle = "Melbourne-Sydney",
    y = "Passengers ('000)"
  )