inst/NEWS.md

In cda: Coupled-Dipole Approximation for Electromagnetic Scattering by Three-Dimensional Clusters of Sub-Wavelength Particles

cda 2.0.0 (06/2016)

DOCUMENTATION

• demos revamped

INTERNAL CHANGES

• rewritten core functions, simplified interface

• the theory is now more accurately described and properly implemented

USER-LEVEL CHANGES

• clusters are now defined with column-major conventions

• new clusters and functions for dye layers (but no core yet)

cda 1.5.1

INTERNAL CHANGES

• use symmetry to calculate only half of the off-diagonal interaction matrix blocks

• tweak LinkingTo Rcpp for CRAN

cda 1.5

INTERNAL CHANGES

• complete rewrite of the internal functions to clean up and optimise the passing of parameters

• cross-sections are now calculated for multiple incident angles at once

• corrected a missing factor of 1/sqrt2 in dispersion calculation with circular polarisation

• Rcpp::function tweaks to please c++11 and clang for CRAN release

• more complete internal tests based on testthat (see inst/tests)

• (non-exported) standalone R version of the core CDA functions for testing and debugging

USER VISIBLE CHANGES:

• dispersion_spectrum now calculates extinction, absorption and scattering

• the linear system is now always solved with a (multiple) right-hand side (incident fields), the option to invert the matrix has been removed. It was slower in most cases anyway

• linear_extinction_spectrum no longer exists. Use the more versatile dispersion_spectrum instead

• demos updated to reflect the internal changes

cda 1.4

USER VISIBLE CHANGES:

• QMC angular averaging gains an 'iterative' routine, adding new integration points until specified accuracy is reached

• a 'cheap' (fast) version of angular averaging is added, only using 3 angles but providing in most cases a good estimate of full averaging

BUG FIX:

• Armadillo 0.190 brought some changes that made the results incorrect at the C++ level. First, the diagonal part of the interaction matrix was filling the off-diagonal blocks with non-zero elements due to non-initialisation of the matrix. Second, the integer flag for the Axes (x, y, z) was passed as a arma::uvec, where arma::ivec should be used.

cda 1.3.3

• CRAN update

• submitting more complete copyright information at the request of CRAN maintainers, to explicitly state the copyright of LAPACK routine src/zgels.f

cda 1.3.1

INTERNAL CHANGES:

• depends on dielectric 0.2.2

cda 1.3 (2012-11-28)

INTERNAL CHANGES:

• fixed polarisation and orientation issues in dispersion calculations

• cleaned up internal code

• started using testthat for consistency checks in future releases

USER VISIBLE CHANGES:

• function names have changed to be more consistent

• all dimensions are now in nanometres

• updated the licence to GPL3 + LICENCE file

DOCUMENTATION:

• new examples under inst/wiki formatted for knitr+markdown and updating the github wiki

• cleaning up demos, examples and vignettes

• link to github + wiki as the source of documentation

cda 1.2 (2012-08-08)

INTERNAL CHANGES:

• explicit export of functions

• theme_minimal adapted for ggplot2

NEW FUNCTIONALITY:

• dispersion_spectrum() calculates the optical response as a function of incident angles and wavelength, for two orthogonal linear polarisation states

cda 1.1.3 (2012-02-07)

• fixed bugs for ggplot2-0.9.0

cda 1.1.2 (2011-10-07)

• fixed implicit conversion of sqrt(2) to sqrt(2.0) for Solaris
• fixed .onLoad function

cda 1.1.1 (2011-09-04) (ftp error)

cda 1.1 (2011-09-04)

USER-VISIBLE CHANGES:

• New dependency on randtoolbox (Halton sequences for Quasi-Monte Carlo angular averaging.

ENHANCEMENTS:

• Choice of three methods for angular averaging: regular grid, Gauss Legendre Quadrature, Quasi-Monte Carlo (default). N now refers to the number of integration points (GL may use a slightly higher number of points, rounded as ceiling[sqrt(N)]).

• added tests/ subdirectory, featuring numerical tests of consistency.

BUG FIXES:

• Removed Encoding: UTF-8 from Description

cda 1.0 (2011-05-15)

Initial CRAN release.

cda documentation built on May 30, 2017, 6:19 a.m.