18 Feb A top Z-score means a higher potential of being part of the sizzling hot spot components
As described in ArcGIS 10.2, the OHS analysis is a tool that uses the Getis-Ord Gi * statistic [Eq. (4)] to estimate the associated Z-score for each feature. To aggregate the Z-scores, OHS applies the average and the median nearest-neighbor calculations given incremental distances between observations as estimated using the incremental spatial autocorrelation tool. In the Getis-Ord Gi * statistic, xjis the attribute value for the feature under consideration for observation j, wwe, j represents the spatial weights between observations, n is the total number of observations, X is equal to ? j = 1 n x j n , and S is equivalent to ? j = 1 n x j 2 n - ( X ) 2 .
To determine spatial weights symbolizing spatial relationships anywhere between findings and you will between features of interest (Anselin, 1988; Getis and you will Aldstadt, 2004; Getis, 2009), i made use of the geo-referenced analysis-latitude and longitude out of ranch and hold coordinates-built-up within the career questionnaire and you can used a row-standardized inverse range spatial weights matrix. Row standardization means that i split for every single pounds by line sum of the fresh new loads provided a certain point band.