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Last Post 25 Aug 2011 07:58 AM by  anon
Does anyone know the formula for calcuating Local Moran I, in ENVI.
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anon



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25 Aug 2011 07:58 AM
    Does anyone know the formula for calcuating Local Moran I, in ENVI. I created a sample 5x5 image and calculated "Local Moran I" in ENVI. Parellay I calculated local moran I manually in Excel. I really donot understand what went wrong, in ENVI the values are too low, and no way matching up with the results that I got manually(seriously I tried 10 time, using the formulas from text book). Any help is appriciated.

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    25 Aug 2011 08:56 AM
    Hi naveen, Well, I checked in the ENVI Help and in there, i.e.: Explore Imagery > Statistics > Local Spatial Statistics They based the information and the Local Moran I index in the following books: Anselin, L., 1995. Local Indicators of Spatial Association – LISA. Geographical Analysis 27(2):93-115 Getis, A. and J.K. Ord, 1992. The Analysis of Spatial Association by Use of Distance Statistics. Geographical Analysis 24(3):189-206. Cheers, Fernando

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    25 Aug 2011 10:48 PM
    Thanks Fernando, I tried to study the literarture, they were really intimidating and seemed like a decent amount of time is required to understand them. Naveen

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    25 Aug 2011 10:48 PM
    Thanks Fernando, I tried to study the literarture, they were really intimidating and seemed like a decent amount of time is required to understand them. Naveen

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    25 Aug 2011 10:48 PM
    Thanks Fernando, I tried to study the literarture, they were really intimidating and seemed like a decent amount of time is required to understand them. Naveen
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