Non-linear Surface Fitting

• Chebyshev2D
• Cosine
• DoseResp
• Exponential2D
• Extreme2D
• ExtremeCum
• Fourier2D
• Gauss2D
• Gaussian2D
• GaussCum
• LogisticCum
• LogNormal2D
• Lorentz2D
• Parabola2D
• Plane
• Poly2D
• Polynomial2D
• Power2D
• Rational2D
• RationalTaylor