IMP::em::KernelParameters Class Reference

#include <IMP/em/KernelParameters.h>

Detailed Description

Calculates and stores Gaussian kernel parameters as a function of a specific radius.

Definition at line 75 of file KernelParameters.h.

Public Member Functions
	KernelParameters (float resolution)
float	get_inv_rsigsq () const
	Get the inverse of sigma squared. More...
float	get_lim () const
	Gets the value of lim parameter. More...
const RadiusDependentKernelParameters &	get_params (float radius, float eps=0.001)
	Finds the precomputed parameters given a particle radius. More...
float	get_rkdist () const
	Get the length of the Gaussian (sigma*number_of_sigmas_used) More...
float	get_rnormfac () const
	Get the Gaussian normalization factor. More...
float	get_rsig () const
float	get_rsigsq () const
float	get_sq2pi3 () const
	Get the non-sigma portion of the Gaussian normalization factor. More...
float	get_timessig () const
	Gets the number of sigma used. More...
const RadiusDependentKernelParameters &	set_params (float radius)
	Sets the parameters that depend on the radius of a given particle. More...
void	show (std::ostream &out=std::cout) const

Protected Member Functions
void	init (float resolution)

Protected Attributes
bool	initialized_
float	inv_rsigsq_
float	lim_
std::map< float, const RadiusDependentKernelParameters * >	radii2params_
float	rkdist_
float	rnormfac_
float	rsig_
float	rsigsq_
float	sq2pi3_
float	timessig_

Member Function Documentation

float IMP::em::KernelParameters::get_inv_rsigsq

(

)

const

Get the inverse of sigma squared.

Definition at line 114 of file KernelParameters.h.

float IMP::em::KernelParameters::get_lim

(

)

const

Gets the value of lim parameter.

Definition at line 127 of file KernelParameters.h.

const RadiusDependentKernelParameters& IMP::em::KernelParameters::get_params	(	float	radius,
		float	eps = 0.001
	)

Finds the precomputed parameters given a particle radius.

Parameters

[in]	radius	searching for parameters of this radius
[in]	eps	used for numerical stability

Note

The parameters are indexes by the radius. To maintain numerical stability, look for a radius within +-eps from the queried radius.

if parameters for this radius were not found, a warning is printed and the parameters are calculated using set_params().

float IMP::em::KernelParameters::get_rkdist

(

)

const

Get the length of the Gaussian (sigma*number_of_sigmas_used)

Definition at line 125 of file KernelParameters.h.

float IMP::em::KernelParameters::get_rnormfac

(

)

const

Get the Gaussian normalization factor.

Definition at line 123 of file KernelParameters.h.

float IMP::em::KernelParameters::get_rsig

(

)

const

Get sigma as a function of the resolution according to the full width at half maximum criterion

Definition at line 109 of file KernelParameters.h.

float IMP::em::KernelParameters::get_rsigsq

(

)

const

Get squared sigma as a function of the resolution according to the full width at half maximum criterion

Definition at line 112 of file KernelParameters.h.

float IMP::em::KernelParameters::get_sq2pi3

(

)

const

Get the non-sigma portion of the Gaussian normalization factor.

Definition at line 121 of file KernelParameters.h.

float IMP::em::KernelParameters::get_timessig

(

)

const

Gets the number of sigma used.

Note

We use 3, which means that 99% of the density is considered

Definition at line 119 of file KernelParameters.h.

const RadiusDependentKernelParameters& IMP::em::KernelParameters::set_params

(

float

radius

)

Sets the parameters that depend on the radius of a given particle.

The other variables of the parameters (rsigsq,timessig,sq2pi3,inv_rsigsq,rnormfac,rkdist) must have been set.

Parameters

[in]

radius

the radius

Returns

the radius based parameters

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

• KernelParameters.h