IMP.EMageFit.sampling Namespace Reference

Utility functions to handle sampling. More...

Detailed Description

Utility functions to handle sampling.

Functions
def	create_sampling_grid_2d
	Creates a grid of positions (Vector3Ds), centered at 0. More...
def	create_sampling_grid_3d
	Creates a grid of positions (Vector3Ds), centered at 0. More...
def	get_orientations_nearby
	Rotations nearby a given one. More...

Function Documentation

def IMP.EMageFit.sampling.create_sampling_grid_2d	(		diameter,
			n_axis_points
	)

Creates a grid of positions (Vector3Ds), centered at 0.

The shape of the grid is a circle with diameter given by the parameter. n_axis_points is the number of points along an axis: The axis X Y will contain n_axis_points, equispaced. The other regions of space will contain only the points allowed by the size of the circle.

Note

This function is only available in Python.

Definition at line 48 of file sampling.py.

def IMP.EMageFit.sampling.create_sampling_grid_3d	(		diameter,
			n_axis_points
	)

Creates a grid of positions (Vector3Ds), centered at 0.

Parameters

diameter	The shape of the grid is a sphere with this diameter.
n_axis_points	Number of points used along an axis for the grid. The axis X Y and Z will contain n_axis_points, equispaced. The other regions of space will contain only the points allowed by the size of the sphere.

Note

This function is only available in Python.

Definition at line 24 of file sampling.py.

def IMP.EMageFit.sampling.get_orientations_nearby	(		rotation,
			n,
			f
	)

Rotations nearby a given one.

They are got interpolating with the rotations of the uniform coverage. The parameter f (0 <= f <= 1) must be close to 0 to get orientations that are close to the given orientation

• Values from 0.1 (tight cluster) to 0.4 (loose) seem to be ok n - number of rotations requested

Note

This function is only available in Python.

Definition at line 73 of file sampling.py.