I am presently trying to learn R. I would like to be able to apply it more in my work environment as I am an analyst in the Health Care industry. I am presently trying to use R to forecast. What is the best forecasting package in R?
I am presently using the forecast package. I have tried to fit the
ets models to my data but I feel that it is giving me some fairly unreasonable solutions. The data is flat, meaning that it does not linearly increase and there are some fluctuations, but I have not been able to assess whether or not those fluctuations are seasonal. I am assuming they are not.
How can I calculate the out of sample error when I am comparing forecasting models? Also, is there a way to plot my forecasted data against the actual values? Lastly, how can I determine the model that is generated from the forecast?
Thanks for all of your help in advance.