contrib/mul/pdf1d/pdf1d_prob_chi2.cxx File Reference

#include "pdf1d_prob_chi2.h"
#include <vcl_iostream.h>
#include <vcl_cstdlib.h>
#include <mbl/mbl_gamma.h>

Go to the source code of this file.

Functions
double	pdf1d_chi2_for_cum_prob (double p, int n_dof, double tol)
	Returns X such that P(chi<X | dof==n)==p.
double	pdf1d_cum_prob_chi2 (int n_dof, double chi2)
	P(chi<chi2).

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Function Documentation

double pdf1d_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 8 of file pdf1d_prob_chi2.cxx.

double pdf1d_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 59 of file pdf1d_prob_chi2.cxx.