mg_random.cpp File Reference

Functions for applying some randomization to parameters. More...

#include "mg_random.h"
#include "linked_list.h"
#include "random_numbers.h"
#include "utilities.h"

Functions
int	project_random_defocus (Bproject *project, double std)
	Introduces random errors into micrograph defocus averages. More...
int	project_random_origins (Bproject *project, double std)
	Introduces random errors into particle origins. More...
int	project_random_views (Bproject *project)
	Replace the original particle orientations by random views. More...
int	project_random_helical_views (Bproject *project)
	Replace the original particle orientations by random side views for a helix. More...
double	particle_random_view (Bparticle *part, double std)
int	project_random_views (Bproject *project, double std)
	Introduces random errors into particle views. More...
int	project_random_magnification (Bproject *project, double std)
	Introduces random errors into particle magnifications. More...
int	project_random_symmetry_related_views (Bproject *project, Bsymmetry &sym)
	Replaces the original orientations by symmetry-related views. More...

Variables
int	verbose

Detailed Description

Functions for applying some randomization to parameters.

Author

Bernard Heymann

Date

Created: 20010206

Modified: 20140225

Function Documentation

particle_random_view()

double particle_random_view	(	Bparticle *	part,
		double	std
	)

project_random_defocus()

int project_random_defocus	(	Bproject *	project,
		double	std
	)

Introduces random errors into micrograph defocus averages.

The random deviations are obtained from a Gaussian distribution
generator.

Parameters

*project	project parameter structure.
std	standard deviation of random error (angstroms).

Returns

int 0.

project_random_helical_views()

int project_random_helical_views

(

Bproject *

project

)

Replace the original particle orientations by random side views for a helix.

The random views are generated in the ranges {[0,1], [0,1], [0,1], [-PI,PI]}.

Parameters

*project

project parameter structure.

Returns

int 0.

project_random_magnification()

int project_random_magnification	(	Bproject *	project,
		double	std
	)

Introduces random errors into particle magnifications.

The random deviations are obtained from a Gaussian distribution
generator.

Parameters

*project	project parameter structure.
std	standard deviation of random error (fraction).

Returns

int 0.

project_random_origins()

int project_random_origins	(	Bproject *	project,
		double	std
	)

Introduces random errors into particle origins.

The random deviations are obtained from a Gaussian distribution
generator.

Parameters

*project	project parameter structure.
std	standard deviation of random error (pixels).

Returns

int 0.

project_random_symmetry_related_views()

int project_random_symmetry_related_views	(	Bproject *	project,
		Bsymmetry &	sym
	)

Replaces the original orientations by symmetry-related views.

Author

Eduardo Sanz-Garcia and David Belnap

For each particle all the symmetry-related views are generated and
one randomly selected.

Parameters

*project	project parameter structure.
*sym	symmetry structure.

Returns

int 0.

project_random_views() [1/2]

int project_random_views

(

Bproject *

project

)

Replace the original particle orientations by random views.

The random views are generated in the ranges {[0,1], [0,1], [0,1], [-PI,PI]}.

Parameters

*project

project parameter structure.

Returns

int 0.

project_random_views() [2/2]

int project_random_views	(	Bproject *	project,
		double	std
	)

Introduces random errors into particle views.

The random deviations are obtained from a Gaussian distribution
generator.

Parameters

*project	project parameter structure.
std	standard deviation of random error (radians).

Returns

int 0.

Variable Documentation

verbose

int verbose

extern