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Disclaimer:Īll functions in this toolbox were implemented with care and tested on the examples presented in 'Biostatistical Analysis' were possible. If you have suggestions, bugs or feature requests or want to contribute code, please email us. In some cases, the other books were preferred for implementation was more straightforward for solutions presented there. The implementation follows in most cases 'Biostatistical Analysis' and all referenced equations and tables are taken from this book, if not otherwise noted. Zar, Biostatistical Analysis, Prentice Hall, 1999 Jammalamadaka et al., Topics in circular statistics, World Scientific, 2001 Fisher, Statistical analysis of circular data, Cambridge University Press, 1996
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Batschelet, Circular Statistics in Biology, Academic Press, 1981 If you prefer to use the old functions, for now they are contained in the subdirectory 'old'. Per default, all computations are performed columnwise (along dimension 1). This changes the behavior slightly from previous relaeses, in that input is not reshaped anymore into vector format. As a last argument, add the dimension along which you want to average. Since 2010, most functions for descriptive statistics can be used in Matlab style matrix computations. For a detailed description of arguments and outputs consult the help text in the files. ang2rad Convert angular to radian valuesĪll functions take arguments in radians (expect for ang2rad).rad2ang Convert radian to angular values.circ_samplecdf Evaluate CDF of a sample of angles.
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circ_clust Simple clustering for circular data.circ_plot Visualization for circular data.circ_kappa Compute concentration parameter of a von Mises distribution.circ_corrcl Circular-linear correlation coefficient.circ_corrcc Circular-circular correlation coefficient.circ_kuipertest Test whether two distributions are identical (like KS test).circ_symtest Test for symmetry around median angle.circ_ktest Test for equal concentration parameter.circ_wwtest Multi-sample test for equal means, one-factor ANOVA.circ_mtest One-sample test for specified mean direction.circ_vtest V-Test for nonuniformity with known mean direction.circ_raotest Rao's spacing test for nonuniformity.circ_otest Hodges-Ajne test (omnibus test) for nonuniformity.circ_rtest Rayleigh's test for nonuniformity.circ_confmean Confidence intervals for mean direction.circ_dist2 Pairwise distances around a circle.circ_std Dispersion around the mean direction (std, mardia).circ_median Median direction of a sample of circular data.circ_axial Mean direction for axial data.circ_mean Mean direction of a sample of circular data.
CIRCULAR STATISTICS IN BIOLOGY R CODE
Please cite this paper when the provided code is used. Berens, CircStat: A Matlab Toolbox for Circular Statistics, Journal of Statistical Software, Volume 31, Issue 10, 2009 2 (9): e131.Toolbox for circular statistics with Matlab. (2006) Sampling realistic protein conformations using local structural bias.