hdrl_utils_catalogue

Common functions. More...

Collaboration diagram for hdrl_utils_catalogue:

Functions
double	fraction (double x, double y, double r_out)
	Fraction of pixel bounded.
void	dchole (double a[IMNUM+1][IMNUM+1], double b[IMNUM+1], cpl_size n)
	Cholesky decomposition of definite symmetric matrix to solve Ax = b.

Detailed Description

Common functions.

Function Documentation

dchole()

void dchole	(	double	a[IMNUM+1][IMNUM+1],
		double	b[IMNUM+1],
		cpl_size	n
	)

Cholesky decomposition of definite symmetric matrix to solve Ax = b.

Parameters

a	.
b	.
n	.

Description: Cholesky decomposition of definite symmetric matrix to solve Ax = b

fraction()

double fraction	(	double	x,
		double	y,
		double	r_out
	)

Fraction of pixel bounded.

Parameters

x	X Cordinate relative to center
y	Y Cordinate relative to center
r_out

Returns

fraction of pixel bounded by 0 - r_out

Description: Returns fraction of pixel bounded by 0 - r_out x,y coordinates relative to centre. Uses linear approximation ok if pixel located >>1 away from centre.