kml_?_spline2d_get

Return value zij of array zarr at grid point (i, j).

Interface Definition

float kml_float_spline2d_get(const kml_float_spline2d *spline, const float zarr[], const size_t i, const size_t j)

double kml_double_spline2d_get(const kml_double_spline2d *spline, const double zarr[], const size_t i, const size_t j);

Parameters

Parameter	Type	Description	Input/Output
spline	const kml_float_spline2d* / const kml_double_spline2d*	Pointer to an interpolation object.	Input
zarr	Float/Double array	Array that stores the value of z.	Input
i	size_t	Index in the x direction.	Input
j	size_t	Index in the y direction.	Input

Dependencies

#include "kipl.h"

Examples

const size_t xSize = 4;
const size_t ySize = 4;
float xArr[4] = {1,1.33,1.67,2};
float yArr[4] = {1,1.33,1.67,2};
float* zArr = (float*)malloc(xSize * ySize * sizeof(float));
size_t x = 1;
size_t y = 1;
kml_float_spline2d *spline = kml_float_spline2d_alloc(kml_float_interp2d_bicubic, xSize, ySize);
kml_float_spline2d_init(spline, xArr, yArr, zArr, xSize, ySize);
z = kml_float_spline2d_get(spline, zArr, x, y);

Parent topic: spline2d