> yuce=readWorksheetFromFile("E:/4.xlsx",sheet=1,header=TRUE)
> yucets<-ts(yuce)
> yucearima<-auto.arima(yucets)
> yucearimaforecast<-forecast.Arima(yucearima,h=5)
> shiji=readWorksheetFromFile("E:/3.xlsx",sheet=1,header=TRUE)

最开始用了100个数据做预测，我用forecast.Arima向前预测了5个数据后，怎么把yucearimaforecast的序列和shiji里的105个数据的时间序列图画在同一个图里呢？

求大神指教~~~