Raster Library - Interpolation methods. More...

#include <math.h>
#include <string.h>
#include <grass/gis.h>
#include <grass/raster.h>
#include <grass/glocale.h>

Include dependency graph for interp.c:

Go to the source code of this file.

Functions
DCELL	Rast_interp_linear (double u, DCELL c0, DCELL c1)

DCELL	Rast_interp_bilinear (double u, double v, DCELL c00, DCELL c01, DCELL c10, DCELL c11)

DCELL	Rast_interp_cubic (double u, DCELL c0, DCELL c1, DCELL c2, DCELL c3)

DCELL	Rast_interp_bicubic (double u, double v, DCELL c00, DCELL c01, DCELL c02, DCELL c03, DCELL c10, DCELL c11, DCELL c12, DCELL c13, DCELL c20, DCELL c21, DCELL c22, DCELL c23, DCELL c30, DCELL c31, DCELL c32, DCELL c33)

DCELL	Rast_interp_lanczos (double u, double v, DCELL *c)

DCELL	Rast_interp_cubic_bspline (double u, DCELL c0, DCELL c1, DCELL c2, DCELL c3)

DCELL	Rast_interp_bicubic_bspline (double u, double v, DCELL c00, DCELL c01, DCELL c02, DCELL c03, DCELL c10, DCELL c11, DCELL c12, DCELL c13, DCELL c20, DCELL c21, DCELL c22, DCELL c23, DCELL c30, DCELL c31, DCELL c32, DCELL c33)

int	Rast_option_to_interp_type (const struct Option *option)
	Get interpolation method from the option.

Detailed Description

Raster Library - Interpolation methods.

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author: Original author CERL

Definition in file interp.c.

Function Documentation

◆ Rast_interp_bicubic()

DCELL Rast_interp_bicubic	(	double	u,
		double	v,
		DCELL	c00,
		DCELL	c01,
		DCELL	c02,
		DCELL	c03,
		DCELL	c10,
		DCELL	c11,
		DCELL	c12,
		DCELL	c13,
		DCELL	c20,
		DCELL	c21,
		DCELL	c22,
		DCELL	c23,
		DCELL	c30,
		DCELL	c31,
		DCELL	c32,
		DCELL	c33
	)

Definition at line 44 of file interp.c.

References Rast_interp_cubic().

Referenced by Rast_get_sample_cubic().

◆ Rast_interp_bicubic_bspline()

DCELL Rast_interp_bicubic_bspline	(	double	u,
		double	v,
		DCELL	c00,
		DCELL	c01,
		DCELL	c02,
		DCELL	c03,
		DCELL	c10,
		DCELL	c11,
		DCELL	c12,
		DCELL	c13,
		DCELL	c20,
		DCELL	c21,
		DCELL	c22,
		DCELL	c23,
		DCELL	c30,
		DCELL	c31,
		DCELL	c32,
		DCELL	c33
	)

Definition at line 156 of file interp.c.

References Rast_interp_cubic_bspline().

◆ Rast_interp_bilinear()

DCELL Rast_interp_bilinear	(	double	u,
		double	v,
		DCELL	c00,
		DCELL	c01,
		DCELL	c10,
		DCELL	c11
	)

Definition at line 26 of file interp.c.

References Rast_interp_linear().

Referenced by Rast_get_sample_bilinear().

◆ Rast_interp_cubic()

DCELL Rast_interp_cubic	(	double	u,
		DCELL	c0,
		DCELL	c1,
		DCELL	c2,
		DCELL	c3
	)

Definition at line 35 of file interp.c.

Referenced by Rast_interp_bicubic().

◆ Rast_interp_cubic_bspline()

DCELL Rast_interp_cubic_bspline	(	double	u,
		DCELL	c0,
		DCELL	c1,
		DCELL	c2,
		DCELL	c3
	)

Definition at line 146 of file interp.c.

Referenced by Rast_interp_bicubic_bspline().

◆ Rast_interp_lanczos()

DCELL Rast_interp_lanczos	(	double	u,
		double	v,
		DCELL *	c
	)

Definition at line 57 of file interp.c.

References M_PI.

◆ Rast_interp_linear()

DCELL Rast_interp_linear	(	double	u,
		DCELL	c0,
		DCELL	c1
	)

Definition at line 21 of file interp.c.

Referenced by Rast_interp_bilinear().

◆ Rast_option_to_interp_type()

int Rast_option_to_interp_type ( const struct Option * option )

Get interpolation method from the option.

Calls G_fatal_error() on unknown interpolation method.

Supported methods:

NEAREST
BILINEAR
CUBIC

int interp_method
struct Option *opt_method;
 
opt_method = G_define_standard_option(G_OPT_R_INTERP_TYPE);
 
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
 
interp_method = G_option_to_interp_type(opt_method);

Parameters

option pointer to interpolation option

Returns: interpolation method code

Definition at line 196 of file interp.c.

References _, G_fatal_error(), INTERP_BICUBIC, INTERP_BILINEAR, INTERP_NEAREST, and INTERP_UNKNOWN.

Functions