Changelog

v1.0.0

Enhancements

  • Limit calculation for k=0 provided (resulted in nan before)

  • Alternative hankel kernel now selectable: sqrt(x) * J(nu, x)

  • Caching of series factors for faster calculations

  • Various infrastructure upgrades (setuptools_scm, pre-commit, black)

Bugfixes

  • Saver calculation of xrange_approx

Deprecations

  • Methods G and deltaG now named final_term_amplitude and slope_of_last_term.

0.3.9

Version corresponding to JOSS paper release.

Bugfixes

  • Fixed SymmetricFourierTransform default N to be dynamic, like HankelTransform.

v0.3.8 [08 Jan 2019]

Enhancements

  • Swapped to pytest from nose for all testing

  • Removed warnings of overflow for cosh and sinh functions

  • Improved documentation in many areas.

  • Swapped out default 3.2/h for pi/h, which sounds way cooler :-)

Bugfixes

  • Fixed an error in tests such that the wrong analytic function was being tested.

  • Removed a check for deltaG in get_h, which sometimes fails spectacularly.

v0.3.7 [11 Dec 2018]

Bugfixes

  • Fixed issue in Py3 in which dim=2 would not run the fast function (thanks @MuellerSeb)

v0.3.6 [6 Aug 2018]

Enhancements

  • Added support for transforms with nu=-0.5 (thanks @MuellerSeb)

v0.3.5 [8 Dec 2017]

Bugfixes

  • Fixed Python 3 support from v0.3.4

v0.3.4 [28 July 2017]

Features

  • Added get_h function to aide in determining optimal h value for a given transformation.

Enhancements

  • Added _get_series method to quickly retrieve the summed series for the integration.

  • Two updated notebook examples.

Bugfixes

  • Moved setting of N to avoid error.

v0.3.3 [28 July 2017]

Features

  • Some additional tools to determine accuracy – quick calculation of last term in sum, and evaluated range.

Enhancements

  • Default setting of N=3.2/h, which is the maximum possible N that should be chosen, as above this, the series truncates due to the double-exponential convergence to the roots of the Bessel function.

Bugfixes

  • Fixed error in cumulative sum when k is not scalar.

v0.3.2 [12 July 2017]

Enhancements

Bugfixes

  • Fixed relative import in Python 3 (tests now passing), thanks to @louity

  • Fixed docstring of SymmetricFourierTransform to have correct Fourier convention equation

  • Fixed bug in choosing alternative conventions in which the fourier-dual variable was unchanged.

v0.3.1 [5 Jan 2017]

Bugfixes

  • Fixed normalisation for inverse transform in SymmetricFourierTransform.

Features

  • Ability to set Fourier conventions arbitrarily in SymmetricFourierTransform.

v0.3.0 [4 Jan 2017]

Features

  • New class SymmetricFourierTransform which makes it incredibly easy to do arbitrary n-dimensional fourier transforms when the function is radially symmetric (includes inverse transform).

  • Addition of integrate method to base class to perform Hankel-type integrals, which were previously handled by the transform method. This latter method is now used for actual Hankel transforms.

  • Documentation!

Enhancements

  • Addition of many tests against known integrals.

  • Continuous integration

  • Restructuring of package for further flexibility in the future.

  • Quicker zero-finding of 1/2-order bessel functions.

  • This changelog.

  • Some notebooks in the devel/ directory which show how various integrals/transforms behave under different choices of integration steps.

v0.2.2 [29 April 2016]

Enhancements

  • Compatibility with Python 3 (thanks to @diazona)

  • Can now use with array-value functions (thanks to @diazona)

v0.2.1 [18 Feb 2016]

Bugfixes

  • Fixed pip install by changing readme –> README

Enhancements

  • updated docs to show dependence on mpmath

v0.2.0 [10 Sep 2014]

Features

  • Non-integer orders supported through mpmath.

v0.1.0

  • First working version. Only integer orders (and 1/2) supported.