Generic function used in the construction of space-time planar point patterns. An stppp object is like a ppp object, but with extra components for (1) a vector giving the time at whcih the event occurred and (2) a time-window over which observations occurred. Observations are assumed to occur in the plane and the observation window is assumed not to change over time.
stppp(P, ...)
an object
additional arguments
method stppp