/*! \pre the \f$ x \f$ and \f$ y \f$ values must be sorted. */
public BicubicSpline(List <double> xBegin, int size, List <double> yBegin, int ySize, Matrix zData)
{
impl_ = new BicubicSplineImpl(xBegin, size, yBegin, ySize, zData);
}
/*! \pre the \f$ x \f$ and \f$ y \f$ values must be sorted. */
public BicubicSpline( List<double> xBegin, int size, List<double> yBegin,int ySize,Matrix zData)
{
impl_ = new BicubicSplineImpl(xBegin, size, yBegin, ySize, zData);
}