ptypy.engines.utils

Engine-specific utilities. This could be compiled, or GPU accelerated.

This file is part of the PTYPY package.

copyright:

Copyright 2014 by the PTYPY team, see AUTHORS.

license:

see LICENSE for details.

Functions

Cdot(c1, c2)	Compute the dot product on two containers c1 and c2.
Cnorm2(c)	Computes a norm2 on whole container c.
basic_fourier_update(diff_view[, pbound, ...])	* DEPRECATED * Backwards compatible function, for reference only.
basic_fourier_update_LEGACY(diff_view[, ...])	* DEPRECATED * Fourier update a single view using its associated pods.
dynamic_load(path, baselist[, fail_silently])	Load an derivatives of baselist dynamically from .py files in the given path.
log_likelihood(diff_view)	Calculates the log-likelihood for a diffraction view.
projection_update_DM_AP(diff_view[, alpha, ...])	Linear interpolation between Difference Map algorithm (a,b,c = -1,1,2) and Alternating Projections algorithm (a,b,c = 0,1,1) with coefficients a = -alpha, b = 1, c = 1 + alpha.
projection_update_generalized(diff_view, a, b, c)	Generalized projection update of a single view using its associated pods.
reduce_dimension(a, dim[, local_indices])	Apply a low-rank approximation on a.