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遭遇狮子后即刻采取即刻逃逸战术的步选择函数（step selection function, SSF），对应研究问题4。各字段含义如下： 1. id：斑马个体编号 2. FakeTime：2-案例变量 3. case：二元变量，观测步取值为1，随机步取值为0 4. strata：层编号，每个观测步所在的层会将其与10个随机步进行配对 5. TacticCont：分类变量，用于标识该步发生于遭遇事件之后（记为"Tactic"组）还是主动预遭遇阶段（记为"Control"组） 6. Grassland：二元变量，若该步终点位于草原则取值为1，否则为0 7. Bushland-1、Bushland-2、Bushland-3：均为二元变量 8. Woodland：二元变量，用于标识该步终点是否位于林地 9. Spline1-4：以米为单位的步长样条变量 10. Step Length：该步的实际长度，单位为米