The strength of autoorrelation in direction is r. Direction is correlated with previous step direction (i.e., is autocorrelated).At each new position, dx & dy are drawn at random from a specified distribution (e.g., normal, can be any distribution)Įach step is independent of the previous one.Īctual data is compared to the null model to test hypotheses about the ecological mechanism of interest.How far it turned, how it is moving back and forth Uncorrelated random walk the simplest movement model - null model (would never see this in reality) looking at latitude relative to 0 degreesĪngle relative to 0 turning angle how the next step changes from the previous steps orientation In some cases constant, in some cases variable (receiver system) location attributes x, y and t stamps step attrbitubes use location attributesĭx, dy, dt, distance, absolute diection, truning angle dx change in xĭistances travelles in x direction distance lenght of the lineĬ = square root of dy2 and dx2 pythagorus's theorem a2 + b2 = c2 absolute direction is relative to a standard. Each location in the path can be described by Each location in the path can be described by its spatial coordinates (x, y) and a time stamp (t). What are the variables in Netlogo built in user defines attributes What is the model cycle of Netlogo? Inititiotion runs the simulation, then gives an output a movement path is a discrete representation of theĬontinuous process of movement. What are the procedure codes in NetLogo a set of ordered commands to perform an actionĮnd with : end What do primitives do in Netlogo Primitives (functions): commands which perform an action (e.g., ask, set) for each agent (e.g., patches)Īsk patches WHat are control stuctures Control structures: if‐then‐else commands.
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