genie::Interpolator2D Class Reference

A 2D interpolator using the GSL spline type If GSL version is not sufficient, does an inefficient version using TGraph2D. More...

#include <Interpolator2D.h>

Classes
struct	interp_accel_container
struct	spline2d_container

Public Member Functions
	Interpolator2D (const size_t &size_x, const double *grid_x, const size_t &size_y, const double *grid_y, const double *knots)
	~Interpolator2D ()
double	Eval (const double &x, const double &y) const
double	DerivX (const double &x, const double &y) const
double	DerivY (const double &x, const double &y) const
double	DerivXX (const double &x, const double &y) const
double	DerivXY (const double &x, const double &y) const
double	DerivYY (const double &x, const double &y) const

Private Attributes
spline2d_container *	fSpline
interp_accel_container *	fAcc_x
interp_accel_container *	fAcc_y

Detailed Description

A 2D interpolator using the GSL spline type If GSL version is not sufficient, does an inefficient version using TGraph2D.

Author

Steve Dennis <s.r.dennis liverpool.ac.uk> University of Liverpool

November, 2017

Copyright (c) 2003-2020, The GENIE Collaboration For the full text of the license visit http://copyright.genie-mc.org

Definition at line 27 of file Interpolator2D.h.

Constructor & Destructor Documentation

Interpolator2D::Interpolator2D	(	const size_t &	size_x,
		const double *	grid_x,
		const size_t &	size_y,
		const double *	grid_y,
		const double *	knots
	)

Definition at line 132 of file Interpolator2D.cxx.

                        :
  fSpline (new spline2d_container()),
  fAcc_x  (NULL),
  fAcc_y  (NULL)
{
  fSpline->spl = new TGraph2D(size_x*size_y);
  fSpline->spl->SetDirectory(0);
  size_t iz = 0;
  for (size_t iy = 0 ; iy < size_y ; iy++) {
    for (size_t ix = 0 ; ix < size_x ; ix++) {
      fSpline->spl->SetPoint(iz,grid_x[ix],grid_y[iy],knots[iz]);
      iz++;
    }
  }
}

Interpolator2D::~Interpolator2D

(

)

Definition at line 151 of file Interpolator2D.cxx.

{
  if (fSpline) delete fSpline;
  if (fAcc_x ) delete fAcc_x;
  if (fAcc_y ) delete fAcc_y;
}

Member Function Documentation

double Interpolator2D::DerivX	(	const double &	x,
		const double &	y
	)		const

Definition at line 163 of file Interpolator2D.cxx.

{
  assert(!"Method requires GSL version 2 or higher.");
  return -999;
}

double Interpolator2D::DerivXX	(	const double &	x,
		const double &	y
	)		const

Definition at line 175 of file Interpolator2D.cxx.

{
  assert(!"Method requires GSL version 2 or higher.");
  return -999;
}

double Interpolator2D::DerivXY	(	const double &	x,
		const double &	y
	)		const

Definition at line 181 of file Interpolator2D.cxx.

{
  assert(!"Method requires GSL version 2 or higher.");
  return -999;
}

double Interpolator2D::DerivY	(	const double &	x,
		const double &	y
	)		const

Definition at line 169 of file Interpolator2D.cxx.

{
  assert(!"Method requires GSL version 2 or higher.");
  return -999;
}

double Interpolator2D::DerivYY	(	const double &	x,
		const double &	y
	)		const

Definition at line 187 of file Interpolator2D.cxx.

{
  assert(!"Method requires GSL version 2 or higher.");
  return -999;
}

double Interpolator2D::Eval	(	const double &	x,
		const double &	y
	)		const

Definition at line 158 of file Interpolator2D.cxx.

{
  return fSpline->spl->Interpolate(x,y);
}

Member Data Documentation

interp_accel_container* genie::Interpolator2D::fAcc_x

mutableprivate

Definition at line 49 of file Interpolator2D.h.

interp_accel_container* genie::Interpolator2D::fAcc_y

mutableprivate

Definition at line 50 of file Interpolator2D.h.

spline2d_container* genie::Interpolator2D::fSpline

private

Definition at line 46 of file Interpolator2D.h.

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The documentation for this class was generated from the following files:

• Generator/src/Framework/Numerical/Interpolator2D.h
• Generator/src/Framework/Numerical/Interpolator2D.cxx