multilinear_interpolation.h File Reference

Multilinear interpolation (header only). More...

#include <vector>

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Functions
int	get_location_dim (const int nx, const double *x, const double xP)
double	LI_1D (const int nx, const double *x, const double *f, const double xP)
double	LI_2D (const int nx, const int ny, const double *x, const double *y, const double *f, const double xP, const double yP)
double	LI_3D (const int nx, const int ny, const int nz, const double *x, const double *y, const double *z, const double *f, const double xP, const double yP, const double zP)
double	LI_4D (const int nx, const int ny, const int nz, const int nw, const double *x, const double *y, const double *z, const double *w, const double *f, const double xP, const double yP, const double zP, const double wP)
double	LI_5D (const int nx, const int ny, const int nz, const int nw, const int nv, const double *x, const double *y, const double *z, const double *w, const double *v, const double *f, const double xP, const double yP, const double zP, const double wP, const double vP)

Detailed Description

Multilinear interpolation (header only).

Up to five dimensions. These are hard coded. This is relatively easy to read, but not as general as, e.g., https://github.com/parsiad/mlinterp This version assumes simple arrays. Pass in the number of dimensions for each array, then the grid values for each dimension (arrays), then the array of function values at each point, then the locations of the desired points in each dimension. The grid of function values is mapped to 1-D in row-major form: For x,y,z indexed by i,j,k, we have f[i][j][k] ==> f[i*nz*ny + j*nz + k] See LI_2D for specific description of values passed. LI_3D and LI_4D are tested by comparison of the rcSLW code to the python version.

Definition in file multilinear_interpolation.h.

Function Documentation

get_location_dim()

int get_location_dim	(	const int	nx,
		const double *	x,
		const double	xP
	)

Definition at line 22 of file multilinear_interpolation.h.

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LI_1D()

double LI_1D	(	const int	nx,
		const double *	x,
		const double *	f,
		const double	xP
	)

Definition at line 33 of file multilinear_interpolation.h.

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LI_2D()

double LI_2D	(	const int	nx,
		const int	ny,
		const double *	x,
		const double *	y,
		const double *	f,
		const double	xP,
		const double	yP
	)

Definition at line 52 of file multilinear_interpolation.h.

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LI_3D()

double LI_3D	(	const int	nx,
		const int	ny,
		const int	nz,
		const double *	x,
		const double *	y,
		const double *	z,
		const double *	f,
		const double	xP,
		const double	yP,
		const double	zP
	)

Definition at line 80 of file multilinear_interpolation.h.

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LI_4D()

double LI_4D	(	const int	nx,
		const int	ny,
		const int	nz,
		const int	nw,
		const double *	x,
		const double *	y,
		const double *	z,
		const double *	w,
		const double *	f,
		const double	xP,
		const double	yP,
		const double	zP,
		const double	wP
	)

Definition at line 121 of file multilinear_interpolation.h.

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LI_5D()

double LI_5D	(	const int	nx,
		const int	ny,
		const int	nz,
		const int	nw,
		const int	nv,
		const double *	x,
		const double *	y,
		const double *	z,
		const double *	w,
		const double *	v,
		const double *	f,
		const double	xP,
		const double	yP,
		const double	zP,
		const double	wP,
		const double	vP
	)

Definition at line 178 of file multilinear_interpolation.h.

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