Diffusive versus directed movement.

Properties of two classes of journey as distinguished both by lengths either side of 1.3 km, and by relationships between flux fields and journey lengths, orientations, and numbers. The strongest relationships with flux fields are indicated in each case, either as divergence alone (), or total flux (). All relationships are positive, except the negative relationship between lengths of directed trips and (see Table 2). Correlations with numbers of Tube passengers are also shown.两类行程的属性特征，其区分依据包含两点：一是行程长度以1.3千米为分界（即分别处于1.3千米两侧），二是通量场与行程长度、出行方向、出行数量之间的关联关系。两类场景下均标注了与通量场关联强度最高的指标：仅散度（）或总通量（）。所有关联均为正相关，唯有定向出行长度与（参见表2）之间呈负相关。文中同时展示了与地铁（Tube）乘客数量的相关系数。