vnl_chi_squared.h File Reference

Name space for various chi-squared distribution functions. More...

Go to the source code of this file.

Functions
float	vnl_chi_squared_cumulative (float chisq, int dof)
template<class T> double	vnl_chi_squared_statistic_2 (T const *A, T const *B, int n, bool normalize)
template<class T> double	vnl_chi_squared_statistic_12 (T const *A, T const *B, int n, bool normalize)

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Detailed Description

Name space for various chi-squared distribution functions.

Author:

Rupert Curwen, GE CRD, August 18th, 1998

    Modifications
    dac (Manchester) 26/03/2001: tidied up documentation
    

Definition in file vnl_chi_squared.h.

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Function Documentation

float vnl_chi_squared_cumulative (  float    chisq, int    dof )

Compute cumulative distribution function value for chi-squared distribution.

template<class T> double vnl_chi_squared_statistic_12 (  T const *    A, T const *    B, int    n, bool    normalize )

(a[i] - b[i])^2 \sum --------------- i a[i] + b[i]

template<class T> double vnl_chi_squared_statistic_2 (  T const *    A, T const *    B, int    n, bool    normalize )

Name space for various chi-squared distribution functions. A[] and B[] are (pointers to) arrays containing histograms. If the 'normalize' parameter is true, each histogram will be implicitly normalized (so as to sum to 1) before the statistic is calculated : a[i] = A[i] / \sum_j A[j] b[i] = B[i] / \sum_j B[j] *DO NOT* add scale factors to these functions or you will break the code written by those who read the documentation. fsm. */ // (a[i] - b[i])^2 // \sum --------------- // i a[i] // template <class T> double vnl_chi_squared_statistic_1 (T const *A, T const *B, int n, bool normalize); /** (a[i] - b[i])^2 \sum --------------- i b[i]

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