Maximum Likelihood Analysis of Circular Data
A series of wrapper functions to implement the 10 maximum likelihood models of animal orientation described by Schnute and Groot (1992) doi: 10.1016/S0003-3472(05)80068-5. The functions also include the ability to use different optimizer methods and calculate various model selection metrics (i.e., AIC, AICc, BIC). This framework is designed for modeling any dataset represented by angles (e.g, orientation, periodic, etc) using the above models. Main features are listed as follows.
install.packages("circular")
install.packages("CircMLE")
library(CircMLE)
the model fitting function now includes the hessian matrix, and a function ci_circmle to calculate 95\% confidence intervals for the MLE parameters.
Version 0.2.3 2020/1/29
Added the ability to perform the Hermans-Rasson and Pycke tests using code kindly provided by Lukas Landler, Graeme Ruxton, and E. Pascal Malkemper.
Version 0.2.2 2019/10/17
Improved communication between CircMLE and R 'circular' objects, especially for improved plotting when using 'template = "geographics"'.
Version 0.2.1 2018/02/20
Added the README.md file
Version 0.2.0 2017/06/29
Added a plotting function to visualize the observed and modeled results
Version 0.1, 2017/05/13
Fitak, R. R. and Johnsen, S. (2017) Bringing the analysis of animal orientation data full circle: model-based approaches with maximum likelihood. Journal of Experimental Biology 220: 3878-3882; doi: 10.1242/jeb.167056
If using the Hermans-Rasson or Pycke tests then cite: Landler, L., Ruxton, G. D., and Malkemper, E. P. (2019) The Hermans–Rasson test as a powerful alternative to the Rayleigh test for circular statistics in biology. BMC Ecology 19: 30; doi: 10.1186/s12898-019-0246-8
citation("CircMLE")
into your R consoleRobert Fitak Department of Biology University of Central Florida USA rfitak9@gmail.com
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