public double[] Calculate(double[] forecast, double[] price)
{
var days = _pastDays.Where(c => c.Value).Select(c => (double)c.Stats).ToArray();
if ((double)days.Count(c => c > 0) / days.Count() < 0.8)
{
return(null);
}
var result = HoltsCalculation.Calculate(Math.Min(_futureDays.Where(c => c).Count(), 90), days);
int m = 0;
//double dif = 0;
for (var i = 0; i < _futureDays.Count() && i < 90; ++i)
{
if (_futureDays[i])
{
forecast[i] = result[m];
price[i] = _priceTemp;//+ dif;
//dif = forecast[i] - (int)forecast[i];
//forecast[i] = (int)forecast[i];
m++;
}
}
_price = price;
_forecast = forecast;
return(_price);
}
private void CalculatePlanedInflation(DateTime start)
{
//calculate Inflation for planning period with Holts method
if (_inflationCoefs.Any())
{
var array = _inflationCoefs.Where(c => c.Date < start && c.Date >= start.AddMonths(-12)).OrderBy(c => c.Date).Select(c => c.Coef).ToArray();
if (array.Any())
{
double[] newCoefs = HoltsCalculation.Calculate(12, array);
foreach (var coef in newCoefs)
{
_inflationCoefs.Add(new InflationCoef {
Date = start, Coef = coef
});
start = start.AddMonths(1);
}
}
}
}
