title: Plot forecast and actual values
body: <p>I all. I need some help from statistics expert. I have made a simple arima forecast for few values in <code>as</code>. But I have taken a subset of values in <code>train_as</code>. </p>
  
  <p>Now is there a way to plot both actual values and forecasted values here. Like the actual values in 2019 is 4,8,12,16 and the forecast is 9,10,11,12. Can we plot this?</p>
  
  <pre><code>as &lt;- data.frame(a=c(1,2,3,4,2,4,6,8,4,8,12,16))
  train_as &lt;- as[c(1:8),]
  a1 &lt;- ts(train_as,start = c(2017,1),end = c(2017,8),frequency = 4)
  fit_arima &lt;-auto.arima(a1, trace= TRUE, ic ="aic")
  print(summary(fit_arima))
  checkresiduals(fit_arima)
  fcst &lt;- forecast(fit_arima,h=4)
  autoplot(fcst,include = 8)
  </code></pre>