contrib/mul/vpdfl/vpdfl_prob_chi2.h File Reference

Functions for Chi distribution. More...

Go to the source code of this file.

Functions
double	vpdfl_cum_prob_chi2 (int n_dof, double chi2)
	P(chi<chi2).
double	vpdfl_chi2_for_cum_prob (double p, int n, double tol=0.001)
	Returns X such that P(chi<X | dof==n)==p.

---

Detailed Description

Functions for Chi distribution.

Author:

Tim Cootes

Date:

12-Apr-2001

Definition in file vpdfl_prob_chi2.h.

---

Function Documentation

double vpdfl_chi2_for_cum_prob	(	double	p,
		int	n,
		double	tol = 0.001
	)

Returns X such that P(chi<X | dof==n)==p.

The value of Chi-Squared such that the probability that a random variable drawn from a chi-2 distribution is less than Chi_Squared is p.

Parameters:

p	Target probability
n	Number of dimensions
tol	Tolerance of result (default = 0.001)

Definition at line 9 of file vpdfl_prob_chi2.cxx.

double vpdfl_cum_prob_chi2	(	int	n_dof,
		double	chi2
	)

P(chi<chi2).

Calculates the probability that a value generated at random from a chi-square distribution with given degrees of freedom is less than the value chi2

Parameters:

n_dof	Number of degrees of freedom
chi2	Value of chi-squared

Definition at line 58 of file vpdfl_prob_chi2.cxx.