When I use ts <- ts(df, frequency=52, start=c(2007,1)) and then print it, I got results shown below, so instead of 2007.01, 2007.02, 2007.52 ...., I got 2007.000, 2007.019, ....which it gets from 1/52=0.019 which is mathematically correct but not really easy to interpret, is there a way to label it as the date itself just like data frame or at least 2007 wk1, 2007 wk2 ...
Time Series:
Start = c(2007, 1)
End = c(2014, 11)
Frequency = 52
Week, Amount
2007.000, 645575.4
2007.019, 2185193.2
2007.038, 1016711.8
2007.058, 1894056.4
2007.077, 2317517.6
2007.096, 2522955.8
2007.115, 2266107.3
fit <- auto.arima(dmsales[[2]])
fcast<-forecast(fit,h=input$ahead)
dfcast<-data.frame(fcast)
b<-data.frame(seq(as.Date(dmsales[[3]]+7), by = "week", length.out = input$ahead))
ffcast<-as.data.frame(cbind(b,dfcast$Point.Forecast,dfcast$Lo.95,dfcast$Hi.95))
names(ffcast)<-c("Week","Forecast","Lo-95","Hi-95")