`xreg` issue when having user-defined forecast function

[earowang]

I was trying to use forecastHybrid with hierarchical time series and external regressors but I cannot figure out how to do that. I am trying in this way:

library(hts)
library(forecastHybrid )

forecast(htseg1, a.args = list(xreg = data.frame(1:10)), models = "aet", 
xreg = data.frame(11:20), FUN = hybridModel)

But I got the following error:

Error in forecast.Arima(object$auto.arima, h = h, xreg = xreg, level = level) : No regressors provided

[earowang]

If users define their own forecast function where there's an xreg argument, then newxreg needs to be supplied and should appear in line 117 of forecast.gts.R.

[earowang]

library(hts)
library(forecastHybrid )

forecast(htseg1, a.args = list(xreg = data.frame(1:10)), models = "aet", 
newxreg = data.frame(11:20), FUN = hybridModel)

This should work now.