| 摘要 |
A method for measuring a degree of association ( 58 ) between, and for selectively creating a grouping ( 40 ) of, n plurality of spatially referenced physical events ( 22 ) of a predetermined physical characteristic. The method includes the steps of assembling n plurality of physical events ( 26 ), assembling a universe of possible sample locations ( 36 ), determining a reference distribution ( 54 ), determining a restricted distribution ( 56 ), and determining the degree of association ( 58 ) between the n plurality of physical events. Specifically, the physical events each have an indicia of location and a physical characteristic above a threshold. The step ( 54 ) of determining a reference distribution is conducted by calculating a test statistic ( 78 ) for each of n' plurality of random allocations ( 74 ) of the n plurality of physical events over the selected n plurality of sample locations. Further, the step ( 58 ) of determining a restricted distribution includes calculating the test statistic ( 82 ) for each of n'' plurality of restricted random allocations ( 80 ) of the n plurality of physical events over the n plurality of sample locations ( 62 ).
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