private ObservableCollection <Model.Structures.ResultData> ApproximateData()
{
var data = ResultData.Clone();
var approxData = new ObservableCollection <ResultData>((IEnumerable <ResultData>)data);
double sumCons = 0;
double sumTemp = 0;
double sumPres = 0;
double sumSquareCons = 0;
double sumConsLevel = 0;
double sumConsPres = 0;
foreach (var mem in ResultData)
{
sumCons += mem.Consumption;
sumSquareCons += Math.Pow(mem.Consumption, 2);
sumConsLevel += (mem.Consumption * mem.LevelDeviation);
sumConsPres += (mem.Consumption * mem.Pressure);
sumTemp += mem.LevelDeviation;
sumPres += mem.Pressure;
}
double aConsTemp = (ResultData.Count * sumConsLevel - sumCons * sumTemp) / (ResultData.Count * sumSquareCons - Math.Pow(sumCons, 2));
double bConsTemp = (sumTemp - aConsTemp * sumCons) / ResultData.Count;
double aConsPres = (ResultData.Count * sumConsPres - sumCons * sumPres) / (ResultData.Count * sumSquareCons - Math.Pow(sumCons, 2));
double bConsPres = (sumPres - aConsPres * sumCons) / ResultData.Count;
foreach (var mem in approxData)
{
mem.LevelDeviation = mem.Consumption * aConsTemp + bConsTemp;
mem.Pressure = mem.Consumption * aConsPres + bConsPres;
}
return(approxData);
}