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[Wenna <question645803@xxxxxxxxxxxxxxxxxxxxx>]

New question #645803 on Graphite:
https://answers.launchpad.net/graphite/+question/645803

Hi there,

I'm trying to get forecasting data based on history data. But get a bit confused about the time range of holt-winter forecast functions, even after I reviewed the source code.

So for example, if the input series is from -5days until -1days, and then I call the holtWintersForecast, it will give me a series also from -5days to -1days. I know internally it also used data from one previous week. But from the code, I think the prediction also based on current series from -5days to -1days. That means we use the series plus previous a week's data to predict the series? It doesn't make any sense!

Please correct me if I'm wrong. If the training data is actually from one previous week to the start time of the series, and then giving this output, it would be much reasonable.

Thanks,
Wenna

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