Supplement 1. The WinBUGS code for analysis of movement paths.

File List singlet.txt WinBUGS code for model "Single", a single Random Walk. Size 2 KB double.txt WinBUGS code for model "Double", two Random Walks. Size 2 KB double_covar.txt WinBUGS code for model "Double with Covariates". Size 3 KB double_switch.txt WinBUGS code for model "Double Switch". Size 3 KB switch_covar.txt WinBUGS code for model "Switch with Covariates". Size 3 KB switch_constrained.txt WinBUGS code for model "Switch Constrained". Size 3 KB triple_switch.txt WinBUGS code for model "Triple Switch". Size 2 KB HierSwitch.txt WinBUGS code for hierarchical version of Switch model. Size 3 KB simulasw.m Matlab code for movement simulation. Size 5 KB PPcheck.m Matlab code for posterior predictive check. Size 7 KB elk_data.txt Movement data for four elk. Size 87 KB simulated.txt Movement data simulated with simulasw.m. Size 46 KB allfiles.zip All files together. Size 58 KB DescriptionWinBUGS code was run on version 1.4 available at http://www.mrc-bsu.cam.ac.uk/bugs/winbugs/contents.shtml. We use the following generic script:<br> display('log')<br> check('directory/model_name.txt')<br> data('directory/data_file.txt')<br> compile(4)<br> inits(1, 'directory/filename1_ini.txt')<br> inits(2, 'switch/filename2_ini.txt')<br> inits(3, 'switch/filename3_ini.txt')<br> inits(4, 'switch/filename4_ini.txt')<br> gen.inits()<br> set(parameter_names)<br> over.relax('yes')<br> update(50000)<br> stats(*)<br> quantiles(*)<br> coda(*,switch/output)<br> <br> See the WinBUGS manual for details on how to run the analysis. Matlab code was run on student version 6.5.