NEWS.md
In cylcop: Circular-Linear Copulas with Angular Symmetry for Movement Data

cylcop 0.2.0

New plotting functions: circular boxplots with plot_joint_box() and circular histograms with plot_circ_hist().
New functions to assess the goodness of fit of copulas.
cramer_vonmises() calculates the Cramér-von-Mises criterion and the associated p-value to compare a parametric copula to the empirical copula of the data.
wasserstein() calculates the Wasserstein distance between two copula PDFs or between a copula PDF and pseudo-observations.
New functions for density, distribution, quantiles and random number generation of linear mixture distributions with an arbitrary number of components.
Mixed Weibull dweibullmix(), pweibullmix(), qweibullmix(), and rweibullmix().
Mixed gamma dgammamix(), pgammamix(), qgammamix(), and rgammamix().
Mixed normal dnormmix(), pnormmix(), qnormmix(), and rnormmix().
Mixed log-normal dlnormmix(), plnormmix(), qlnormmix(), and rlnormmix().
New functions for density, distribution, quantiles and random number generation of von Mises mixture distributions with an arbitrary number of components: dvonmisesmix(), pvonmisesmix(), qvonmisesmix(), and rvonmisesmix(). qvonmisesmix() replaces the function qmixedvonmises(), which is deprecated.
New functions to calculate density and distribution and to generate samples of bivariate joint distributions that are defined in terms of two marginal distributions and a copula: djoint(), pjoint(), and rjoint().
New function to obtain trajectories from x- and y-coordinates, traj_get()

New checking routines that check every argument of every function for validity.
The plotting functions have new names and added and changed functionalities. The old functions are deprecated.
traj_plot() is now plot_track(). It can now plot multiple trajectories and also separate x- and y-coordinates.
scat_plot() is now plot_joint_scat(). It can take custom kernel density estimates for the margins as input and the plots have an improved appearance. It can now take as input trajectories as well as separate angles and step lengths
cop_scat_plot() is now plot_cop_scat(). It has new input arguments but with the same functionalities.
circ_plot is now plot_joint_circ(). It can now take as input trajectories as well as separate angles and step lengths.
cop_plot is now plot_cop_surf().
make_traj() (deprecated) is now called traj_sim(). It can now take as argument directly the output of fit_steplength()or fit_angle().
The performance of many density, distribution, quantile and random number generating functions is now improved. Especially for copulas of classes cyl_vonmises and cyl_rect_combine and cyl_cubsec.
The names of the arguments of opt_lin_bw() and opt_circ_bw(), have changed and are now more intuitive.

mi_cyl() gives now exactly 1 for copulas with perfect correlation if normalize=TRUE and symmetrize=TRUE are selected.
rdens() (random number generation from kernel density estimates) now works correctly with circular density estimates.
fit_angle() and fit_steplength() now work correctly with all possible parametric distributions and return the correct distribution names.
When you plot a copula using plot() and provide additional arguments that go to the generic plotting function base::plot() there was an error that is now fixed.