public void GetXTermsMatrixTest()
{
//data for y = -7x +2xx
QuadraticFitThruZero target = new QuadraticFitThruZero();
target.Points.Add(new DPoint(0, 0));
target.Points.Add(new DPoint(1, -5));
target.Points.Add(new DPoint(2, -6));
target.Points.Add(new DPoint(3, -3));
target.Points.Add(new DPoint(4, 4));
target.Points.Add(new DPoint(5, 15));
Matrix expected = new Matrix(new double[, ] {
{ 0, 0 },
{ 1, 1 },
{ 2, 4 },
{ 3, 9 },
{ 4, 16 },
{ 5, 25 }
});
Matrix actual = target.GetXTermsMatrix();
Assert.AreEqual(expected, actual);
}
public void CalculateTest()
{
QuadraticFitThruZero target = new QuadraticFitThruZero();
//data for y = -7x +2xx
target.Points.Add(new DPoint(0, 0));
target.Points.Add(new DPoint(1, -5));
target.Points.Add(new DPoint(2, -6));
target.Points.Add(new DPoint(3, -3));
target.Points.Add(new DPoint(4, 4));
target.Points.Add(new DPoint(5, 15));
Matrix parameters = target.CalculateParameters();
Assert.AreEqual(3234, target.Calculate(42));
}
public void ParametersTest()
{
//data for y = -7x +2xx
QuadraticFitThruZero target = new QuadraticFitThruZero();
target.Points.Add(new DPoint(0, 0));
target.Points.Add(new DPoint(1, -5));
target.Points.Add(new DPoint(2, -6));
target.Points.Add(new DPoint(3, -3));
target.Points.Add(new DPoint(4, 4));
target.Points.Add(new DPoint(5, 15));
Matrix parameters = target.CalculateParameters();
//x term
Assert.AreEqual("-7.0000", parameters[0, 0].ToString("0.0000"));
//x squared term
Assert.AreEqual("2.0000", parameters[1, 0].ToString("0.0000"));
}
