Fast cross correlation between two functions. More...

Public Member Functions
	Correlation (int N)
	Single constructor. Slow memory allocations are done once and then reused repeatedly.

void	correlateWithShift (int N, const double function1[], const double function2[], int &binStartMax, double &corrMax, double correlations[]) const
	Return the shift in function1 that best aligns that function with function2. More...

void	correlateWithoutShift (int N, const double function1[], const double function2[], double &corrMax) const
	Return the correlation of the two functions, without any shift. More...

Detailed Description

Fast cross correlation between two functions.

We do not use complex.h along with fftw3.h since then the complex numbers will be native, which would then require platform-dependent code

Definition at line 8 of file Correlation.h.

Member Function Documentation

void Correlation::correlateWithoutShift	(	int	N,
		const double	function1[],
		const double	function2[],
		double &	corrMax
	)		const

Return the correlation of the two functions, without any shift.

The functions are normalized internally.

Definition at line 125 of file Correlation.cpp.

void Correlation::correlateWithShift	(	int	N,
		const double	function1[],
		const double	function2[],
		int &	binStartMax,
		double &	corrMax,
		double	correlations[]
	)		const

Return the shift in function1 that best aligns that function with function2.

The functions are normalized internally. The correlations vector, as a function of shift, is returned for logging

Definition at line 38 of file Correlation.cpp.

The documentation for this class was generated from the following files: