public void CoefficientsTest()
{
QuadraticThruZeroInterpolator target = new QuadraticThruZeroInterpolator(standards());
double[] actual;
actual = target.Coefficients();
Assert.AreEqual(3, actual.Length);
Assert.AreEqual(0, actual[0]);
Assert.AreEqual(-3, actual[1]);
Assert.AreEqual(2, actual[2]);
}
public void QuadraticThruZeroCalculateTest()
{
//y = 0.0804x2 + 1.9256x
//R2 = 0.9212
QuadraticThruZeroInterpolator target = (QuadraticThruZeroInterpolator)Interpolator.Create(CurveFits.QuadraticThruZero, standards());
Assert.AreEqual("0.9212", target.RSquared().ToString("0.0000"));
//passes thru origin
Assert.AreEqual("0.000", target.Calculate(0).ToString("0.000"));
Assert.AreEqual("222.7", target.Calculate(42).ToString("0.0"));
}