public void Analyze(List <ReceivedMeasurement> measurements, AnalysisVM viewmodel)
{
_result = new ComputationResultVM()
{
X_values = new List <string>(new[]
{
"Result"
}),
Y_values = new List <double>(new[]
{
measurements.Sum(m => m.Value) / measurements.Count
})
};
}
public void Analyze(List <ReceivedMeasurement> measurements, AnalysisVM viewmodel)
{
var dates = measurements.Select(x => x.RecordCreateTime.ToOADate()).ToArray();
DirectRegressionMethod regressionMethod = (DirectRegressionMethod)Enum.Parse(typeof(DirectRegressionMethod), viewmodel.regressionMethod);
var polynomialCoefficients = Fit.Polynomial(dates,
measurements.Select(y => y.Value).ToArray(), viewmodel.polynomialDegree, regressionMethod).ToList();
var predictionDate = DateTime.Parse(viewmodel.predictionDate);
var predictionResults = GetPredictionResults(predictionDate.ToOADate(), polynomialCoefficients);
List <string> predictionDates = new List <string>()
{
viewmodel.predictionDate
};
_result = new ComputationResultVM()
{
X_values = predictionDates,
Y_values = predictionResults,
Formula = ""
};
}
public void Analyze(List <ReceivedMeasurement> measurements, AnalysisVM viewmodel)
{
var measurementDates = measurements.Select(x => x.RecordCreateTime.ToOADate()).ToArray();
DirectRegressionMethod regressionMethod = (DirectRegressionMethod)Enum.Parse(typeof(DirectRegressionMethod), viewmodel.regressionMethod);
var polynomialCoefficients = Fit.Polynomial(measurementDates,
measurements.Select(y => y.Value).ToArray(), viewmodel.polynomialDegree, regressionMethod).ToList();
var functionFormula = GetPolynomialFormula(polynomialCoefficients);
var newDates = GenerateNewDates(measurementDates);
var approximationResults = GetApproximationResults(newDates.ToArray(), polynomialCoefficients);
_result = new ComputationResultVM()
{
X_values = measurementDates.Select(x => DateTime.FromOADate(x).ToString("yyyy-MM-dd HH:mm:ss")).ToList(),
X2_values = newDates.Select(x => DateTime.FromOADate(x).ToString("yyyy-MM-dd HH:mm:ss")).ToList(),
Y_values = measurements.Select(x => x.Value).ToList(),
Y2_values = approximationResults,
Formula = functionFormula
};
}
