vpdfl_prob_chi2.cxx File Reference

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Detailed Description

Definition in file vpdfl_prob_chi2.cxx.

#include "vpdfl_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	vpdfl_chi2_for_cum_prob (double p, int n_dof, double tol)
	Returns X such that P(chi<X | dof==n)==p.
double	vpdfl_cum_prob_chi2 (int n_dof, double chi2)
	P(chi<chi2).

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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 10 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 61 of file vpdfl_prob_chi2.cxx.

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