Fig. 1
From: Mapping areas of spatial-temporal overlap from wildlife tracking data
a Space-time prism, between two known fixes, projected onto the geographical plane and associated potential path area (PPA). b Intersection of two space-time prisms, and the projection of the joint accessible space onto the geographical plane – the joint potential path area (jPPA). In (b) light grey represents individual home ranges, medium grey represents home range overlap zone, and dark grey the jPPA; a spatial measure of inter-individual interaction