/// <summary>
/// PiecewiseCubicHermiteSplineInterpolator is not modified for positive data
/// </summary>
public virtual void noModificationTest()
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] xValues = new double[] {1.0, 2.0, 3.0, 4.0, 5.0 };
double[] xValues = new double[] { 1.0, 2.0, 3.0, 4.0, 5.0 };
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[][] yValues = new double[][] { {0.1, 1.0, 1.0, 20.0, 5.0 }, {1.0, 2.0, 3.0, 0.0, 0.0 } };
double[][] yValues = new double[][]
{
new double[] { 0.1, 1.0, 1.0, 20.0, 5.0 },
new double[] { 1.0, 2.0, 3.0, 0.0, 0.0 }
};
PiecewisePolynomialInterpolator interp = new PiecewiseCubicHermiteSplineInterpolator();
PiecewisePolynomialResult result = interp.interpolate(xValues, yValues);
PiecewisePolynomialInterpolator interpPos = new NonnegativityPreservingCubicSplineInterpolator(interp);
PiecewisePolynomialResult resultPos = interpPos.interpolate(xValues, yValues);
assertEquals(resultPos.Dimensions, result.Dimensions);
assertEquals(resultPos.NumberOfIntervals, result.NumberOfIntervals);
assertEquals(resultPos.Order, result.Order);
for (int i = 1; i < xValues.Length - 1; ++i)
{
for (int j = 0; j < 4; ++j)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double ref = result.getCoefMatrix().get(i, j) == 0.0 ? 1.0 : Math.abs(result.getCoefMatrix().get(i, j));
double @ref = result.CoefMatrix.get(i, j) == 0.0 ? 1.0 : Math.Abs(result.CoefMatrix.get(i, j));
assertEquals(resultPos.CoefMatrix.get(i, j), result.CoefMatrix.get(i, j), @ref * EPS);
}
}
}
///
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test(expectedExceptions = IllegalArgumentException.class) public void nanYdataTest()
public virtual void nanYdataTest()
{
double[] xValues = new double[] { 1.0, 2.0, 3.0, 4.0 };
double[] yValues = new double[] { 0.0, 0.0, 0.1, 0.05, 0.2, Double.NaN };
PiecewisePolynomialInterpolator interp = new CubicSplineInterpolator();
PiecewisePolynomialInterpolator interpPos = new NonnegativityPreservingCubicSplineInterpolator(interp);
interpPos.interpolate(xValues, yValues);
}
///
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test(expectedExceptions = IllegalArgumentException.class) public void infXdataMultiTest()
public virtual void infXdataMultiTest()
{
double[] xValues = new double[] { 1.0, 2.0, 3.0, INF };
double[][] yValues = new double[][]
{
new double[] { 0.0, 0.1, 0.05, 0.2 },
new double[] { 0.0, 0.1, 0.05, 0.2 }
};
PiecewisePolynomialInterpolator interp = new CubicSplineInterpolator();
PiecewisePolynomialInterpolator interpPos = new NonnegativityPreservingCubicSplineInterpolator(interp);
interpPos.interpolate(xValues, yValues);
}
///
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test(expectedExceptions = IllegalArgumentException.class) public void diffDataTest()
public virtual void diffDataTest()
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] xValues = new double[] {1.0, 2.0, 3.0, 4.0 };
double[] xValues = new double[] { 1.0, 2.0, 3.0, 4.0 };
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] yValues = new double[] {0.0, 0.1, 0.05 };
double[] yValues = new double[] { 0.0, 0.1, 0.05 };
PiecewisePolynomialInterpolator interp = new NaturalSplineInterpolator();
PiecewisePolynomialInterpolator interpPos = new NonnegativityPreservingCubicSplineInterpolator(interp);
interpPos.interpolate(xValues, yValues);
}
///
public virtual void flipTest()
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] xValues = new double[] {1.0, 2.0, 3.0, 4.0, 5.0, 6.0 };
double[] xValues = new double[] { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 };
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] yValues = new double[] {3.0, 0.1, 0.01, 0.01, 0.1, 3.0 };
double[] yValues = new double[] { 3.0, 0.1, 0.01, 0.01, 0.1, 3.0 };
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] xValuesFlip = new double[] {6.0, 2.0, 3.0, 5.0, 4.0, 1.0 };
double[] xValuesFlip = new double[] { 6.0, 2.0, 3.0, 5.0, 4.0, 1.0 };
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] yValuesFlip = new double[] {3.0, 0.1, 0.01, 0.1, 0.01, 3.0 };
double[] yValuesFlip = new double[] { 3.0, 0.1, 0.01, 0.1, 0.01, 3.0 };
PiecewisePolynomialInterpolator interp = new NaturalSplineInterpolator();
PiecewisePolynomialFunction1D function = new PiecewisePolynomialFunction1D();
PiecewisePolynomialInterpolator interpPos = new NonnegativityPreservingCubicSplineInterpolator(interp);
PiecewisePolynomialResult resultPos = interpPos.interpolate(xValues, yValues);
PiecewisePolynomialResult resultPosFlip = interpPos.interpolate(xValuesFlip, yValuesFlip);
assertEquals(resultPos.Dimensions, resultPosFlip.Dimensions);
assertEquals(resultPos.NumberOfIntervals, resultPosFlip.NumberOfIntervals);
assertEquals(resultPos.Order, resultPosFlip.Order);
const int nPts = 101;
for (int i = 0; i < 101; ++i)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double key = 1.0 + 5.0 / (nPts - 1) * i;
double key = 1.0 + 5.0 / (nPts - 1) * i;
assertTrue(function.evaluate(resultPos, key).get(0) >= 0.0);
}
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int nData = xValues.length;
int nData = xValues.Length;
for (int i = 0; i < nData - 1; ++i)
{
for (int k = 0; k < 4; ++k)
{
assertEquals(resultPos.CoefMatrix.get(i, k), resultPosFlip.CoefMatrix.get(i, k));
}
}
}
///
public virtual void positivityClampedMultiTest()
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] xValues = new double[] {1.0, 2.0, 3.0, 4.0, 5.0 };
double[] xValues = new double[] { 1.0, 2.0, 3.0, 4.0, 5.0 };
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[][] yValues = new double[][] { {0.0, 0.1, 1.0, 1.0, 20.0, 5.0, 0.0 }, {-10.0, 0.1, 1.0, 1.0, 20.0, 5.0, 0.0 } };
double[][] yValues = new double[][]
{
new double[] { 0.0, 0.1, 1.0, 1.0, 20.0, 5.0, 0.0 },
new double[] { -10.0, 0.1, 1.0, 1.0, 20.0, 5.0, 0.0 }
};
PiecewisePolynomialInterpolator interp = new CubicSplineInterpolator();
PiecewisePolynomialResult result = interp.interpolate(xValues, yValues);
PiecewisePolynomialFunction1D function = new PiecewisePolynomialFunction1D();
PiecewisePolynomialInterpolator interpPos = new NonnegativityPreservingCubicSplineInterpolator(interp);
PiecewisePolynomialResult resultPos = interpPos.interpolate(xValues, yValues);
assertEquals(resultPos.Dimensions, result.Dimensions);
assertEquals(resultPos.NumberOfIntervals, result.NumberOfIntervals);
assertEquals(resultPos.Order, result.Order);
const int nPts = 101;
for (int i = 0; i < 101; ++i)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double key = 1.0 + 4.0 / (nPts - 1) * i;
double key = 1.0 + 4.0 / (nPts - 1) * i;
assertTrue(function.evaluate(resultPos, key).get(0) >= 0.0);
}
int dim = yValues.Length;
int nData = xValues.Length;
for (int j = 0; j < dim; ++j)
{
for (int i = 1; i < nData - 2; ++i)
{
DoubleMatrix coefMatrix = resultPos.CoefMatrix;
double tau = Math.Sign(coefMatrix.get(dim * i + j, 3));
assertTrue(coefMatrix.get(dim * i + j, 2) * tau >= -3.0 * yValues[j][i + 1] * tau / (xValues[i + 1] - xValues[i]));
assertTrue(coefMatrix.get(dim * i + j, 2) * tau <= 3.0 * yValues[j][i + 1] * tau / (xValues[i] - xValues[i - 1]));
}
}
}
///
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test(expectedExceptions = IllegalArgumentException.class) public void coincideDataMultiTest()
public virtual void coincideDataMultiTest()
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] xValues = new double[] {1.0, 2.0, 2.0 };
double[] xValues = new double[] { 1.0, 2.0, 2.0 };
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[][] yValues = new double[][] { {2.0, 0.0, 0.1, 0.05, 2.0 }, {1.0, 0.0, 0.1, 1.05, 2.0 } };
double[][] yValues = new double[][]
{
new double[] { 2.0, 0.0, 0.1, 0.05, 2.0 },
new double[] { 1.0, 0.0, 0.1, 1.05, 2.0 }
};
PiecewisePolynomialInterpolator interp = new CubicSplineInterpolator();
PiecewisePolynomialInterpolator interpPos = new NonnegativityPreservingCubicSplineInterpolator(interp);
interpPos.interpolate(xValues, yValues);
}
