Supplement 1. WinBUGS code, and sample data and initial values, for stage-2 state–space model analysis of movement paths.

File List
CodeSupplement_model.txt -- WinBUGS code

CodeSupplement_data and inits.txt -- sample data and initial values

Description
“CodeSupplement_model.txt” contains WinBUGS code for running the stage-2 state-space
model in: S. Eckert, J. Moore, D. Dunn, R. Sagarminaga,
K. Eckert, P. Halpin "Hierarchical state-space
models of loggerhead sea turtle (Caretta caretta) movement in relation to turtle size and
oceanographic features in the western Mediterranean Sea". Code includes prior specification for all
estimated parameters and hyper-parameters (stochastic nodes), including
parameters describing covariate effects on behavioral switch probabilities and
parameters describing movement characteristics (rates and variance of turn
angles) for two behavioral states. Code
includes normal and wrapped Cauchy likelihoods for mode-specific movement
parameters and a Bernoulli likelihood for behavioral
state. Model is based on a hierarchical
switch model from: J. Morales, D. Haydon, J. Frair, K. Holsinger, and J. Fryxell. Extracting more out of reloction data: building movement models as mixtures of
random walks. Ecology 85:2436–2445.

“CodeSupplement_data and inits.txt” contains sample data and
initial values in WinBUGS format. All data were standardized as z-scores for
analysis.