SSF_ImmediateFlight_Immediately

Data used to asses the step selection function (SSF) of zebras using the immediate-flight tactic immediately after an encounter with lions (question 4). Column headings: id = id of zebra, FakeTime = 2-case, case = binary variable with 1 for an observed step and 0 for a random step, strata = id of the stratum where an observed step is paired with 10 random steps, TacticCont = categorical variable indicating if the step occurred after an encounter ("Tactic") or during the proactive phase ("Control"), Grassland = binary variable with 1 if the step ended in grassland and 0 if not, Bushland-1 = binary variable, Bushland-2 = binary variable, Bushland-3 = binary variable, Woodland = binary variable, Spline1-4 = spline variable for step length in m, Step Length = length of the step in m.

本数据集用于评估斑马在与狮子遭遇后即刻采用逃逸策略时的步选择函数（step selection function, SSF），对应研究问题4。各字段含义如下：id为斑马个体编号；FakeTime为双案例变量；case为二分类变量，观测步赋值为1，随机步赋值为0；strata为层编号，每个观测步将与10个随机步配对至同一层内；TacticCont为分类变量，用于指示该步发生于遭遇后策略阶段（"Tactic"）还是主动阶段（"Control"）；Grassland为二分类变量，若该步的终点位于草原生境则赋值为1，否则为0；Bushland-1、Bushland-2、Bushland-3均为二分类变量；Woodland为二分类变量；Spline1-4为以米为单位的步长样条变量；Step Length为以米为单位的步长数值。