Comparer des méthodes

	Analyse globale des points chauds (Statistique G de Getis-Ord)	La statistique Gi* de Getis-Ord locale (Analyse de points chauds)
Domaine	Analyse spatiale	Analyse spatiale
Famille	Regression model	Regression model
Année d'origine	1992	1992–1995
Auteur d'origine	Arthur Getis and J. Keith Ord	Arthur Getis and J. Keith Ord
Type	Global spatial concentration test	Local spatial association statistic
Source fondatrice	Getis, A., & Ord, J. K. (1992). The analysis of spatial association by use of distance statistics. Geographical Analysis, 24(3), 189-206.	Getis, A., & Ord, J. K. (1992). The analysis of spatial association by use of distance statistics. Geographical Analysis, 24(3), 189–206.
Alias	Global G statistic, Getis-Ord G, global spatial clustering test, global concentration statistic	Gi* statistic, Getis-Ord Gi*, local G-star, hot spot statistic
Apparentées	5	5
Résumé	Global Hot Spot Analysis uses the Getis-Ord G statistic to determine whether high or low attribute values are spatially concentrated across an entire study area. It answers one question: is there overall clustering of high values (a hot spot tendency) or low values (a cold spot tendency) in the dataset as a whole, producing a single summary test for the full region.	The Local Getis-Ord Gi* statistic identifies statistically significant spatial clusters of high values (hot spots) and low values (cold spots) within a study area. Unlike global measures, it produces a z-score for every location, revealing where concentrated clustering occurs and with what statistical confidence.