Has anybody used Stata for tests of spatio-temporal clustering (Mantel,
Knox, k-Nearest Neighbor, ...)?
These tests use data on events that have a spatial (XY coordinates) and
temporal (e.g. date) element, and use all possible (unordered) pairs of
observation (i.e. (N*(N-1))/2) in the data for calculating the products of
time-distances and spatial distance.
I gues it is tedious though not extremely difficult to program. Any help or
guidance is appreciated. For example, how do I generate all unordered pairs
of observations (--cross-- the dataset with itself and then dropping half of
the cases?)
Thanks!
Wim Bernasco
> Netherlands Institute for the Study of
> Crime and Law Enforcement (NSCR)
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